/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:33:48,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:33:48,637 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 02:33:48,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:33:48,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:33:48,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:33:48,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:33:48,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:33:48,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:33:48,657 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:33:48,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:33:48,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:33:48,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:33:48,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:33:48,659 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:33:48,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:33:48,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:33:48,660 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:33:48,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:33:48,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:33:48,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:33:48,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:33:48,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:33:48,662 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:33:48,662 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:33:48,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:33:48,662 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:33:48,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:33:48,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:33:48,663 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:33:48,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:33:48,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:33:48,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:33:48,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:33:48,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:33:48,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:33:48,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:33:48,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:33:48,665 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:33:48,665 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:33:48,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:33:48,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:33:48,665 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:33:48,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:33:48,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:33:48,666 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:33:48,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:33:48,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:33:48,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:33:48,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:33:48,912 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:33:48,913 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:33:48,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2023-12-22 02:33:50,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:33:50,274 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:33:50,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2023-12-22 02:33:50,290 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18df27916/097b128562e74de597eccd77bda8db48/FLAGc2063c271 [2023-12-22 02:33:50,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18df27916/097b128562e74de597eccd77bda8db48 [2023-12-22 02:33:50,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:33:50,309 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:33:50,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:33:50,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:33:50,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:33:50,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cd5eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50, skipping insertion in model container [2023-12-22 02:33:50,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,358 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:33:50,482 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2023-12-22 02:33:50,521 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2023-12-22 02:33:50,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:33:50,564 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:33:50,572 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2023-12-22 02:33:50,585 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2023-12-22 02:33:50,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:33:50,642 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:33:50,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50 WrapperNode [2023-12-22 02:33:50,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:33:50,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:33:50,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:33:50,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:33:50,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,686 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 565 [2023-12-22 02:33:50,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:33:50,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:33:50,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:33:50,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:33:50,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,717 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 02:33:50,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:33:50,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:33:50,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:33:50,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:33:50,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (1/1) ... [2023-12-22 02:33:50,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:33:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:33:50,810 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 02:33:50,830 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 02:33:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:33:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-22 02:33:50,840 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-22 02:33:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-22 02:33:50,840 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-22 02:33:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-22 02:33:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-22 02:33:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-22 02:33:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-22 02:33:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-22 02:33:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-22 02:33:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-22 02:33:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-22 02:33:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-22 02:33:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-22 02:33:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-22 02:33:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-22 02:33:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:33:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-22 02:33:50,842 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-22 02:33:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-22 02:33:50,842 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-22 02:33:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-22 02:33:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-22 02:33:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-22 02:33:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-22 02:33:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-22 02:33:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-22 02:33:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:33:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:33:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-22 02:33:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-22 02:33:50,947 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:33:50,949 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:33:51,475 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:33:51,519 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:33:51,519 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-22 02:33:51,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:51 BoogieIcfgContainer [2023-12-22 02:33:51,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:33:51,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:33:51,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:33:51,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:33:51,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:33:50" (1/3) ... [2023-12-22 02:33:51,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d0ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:51, skipping insertion in model container [2023-12-22 02:33:51,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:50" (2/3) ... [2023-12-22 02:33:51,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d0ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:51, skipping insertion in model container [2023-12-22 02:33:51,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:51" (3/3) ... [2023-12-22 02:33:51,526 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2023-12-22 02:33:51,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:33:51,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:33:51,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:33:51,586 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;@b2ec252, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:33:51,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:33:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 206 states have (on average 1.6650485436893203) internal successors, (343), 212 states have internal predecessors, (343), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-22 02:33:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:33:51,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:51,600 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 02:33:51,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:51,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash 504153522, now seen corresponding path program 1 times [2023-12-22 02:33:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:51,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925542949] [2023-12-22 02:33:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:51,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:51,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:51,615 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 02:33:51,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 02:33:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:51,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:33:51,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:51,782 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 02:33:51,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:51,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925542949] [2023-12-22 02:33:51,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925542949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:51,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:51,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:33:51,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666755889] [2023-12-22 02:33:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:33:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:33:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:33:51,809 INFO L87 Difference]: Start difference. First operand has 255 states, 206 states have (on average 1.6650485436893203) internal successors, (343), 212 states have internal predecessors, (343), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:33:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:52,456 INFO L93 Difference]: Finished difference Result 587 states and 935 transitions. [2023-12-22 02:33:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:33:52,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-22 02:33:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:52,467 INFO L225 Difference]: With dead ends: 587 [2023-12-22 02:33:52,467 INFO L226 Difference]: Without dead ends: 344 [2023-12-22 02:33:52,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:33:52,473 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 292 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:52,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 747 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-22 02:33:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-22 02:33:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 338. [2023-12-22 02:33:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 271 states have (on average 1.5166051660516606) internal successors, (411), 277 states have internal predecessors, (411), 43 states have call successors, (43), 21 states have call predecessors, (43), 22 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-12-22 02:33:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 500 transitions. [2023-12-22 02:33:52,525 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 500 transitions. Word has length 58 [2023-12-22 02:33:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:52,525 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 500 transitions. [2023-12-22 02:33:52,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:33:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 500 transitions. [2023-12-22 02:33:52,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:33:52,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:52,529 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 02:33:52,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 02:33:52,732 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 02:33:52,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:52,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1439839246, now seen corresponding path program 1 times [2023-12-22 02:33:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096426969] [2023-12-22 02:33:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:52,734 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 02:33:52,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:52,736 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 02:33:52,752 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 02:33:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:52,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:33:52,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:52,879 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 02:33:52,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:52,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:52,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096426969] [2023-12-22 02:33:52,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096426969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:52,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:33:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411854386] [2023-12-22 02:33:52,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:52,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:33:52,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:52,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:33:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:52,883 INFO L87 Difference]: Start difference. First operand 338 states and 500 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 02:33:52,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:52,943 INFO L93 Difference]: Finished difference Result 654 states and 937 transitions. [2023-12-22 02:33:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:33:52,943 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 02:33:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:52,947 INFO L225 Difference]: With dead ends: 654 [2023-12-22 02:33:52,947 INFO L226 Difference]: Without dead ends: 492 [2023-12-22 02:33:52,948 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 02:33:52,949 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 349 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:52,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 452 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:33:52,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-22 02:33:52,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 482. [2023-12-22 02:33:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 383 states have (on average 1.485639686684073) internal successors, (569), 391 states have internal predecessors, (569), 59 states have call successors, (59), 35 states have call predecessors, (59), 38 states have return successors, (65), 58 states have call predecessors, (65), 57 states have call successors, (65) [2023-12-22 02:33:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 693 transitions. [2023-12-22 02:33:52,985 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 693 transitions. Word has length 58 [2023-12-22 02:33:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:52,985 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 693 transitions. [2023-12-22 02:33:52,985 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 02:33:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 693 transitions. [2023-12-22 02:33:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:33:52,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:52,987 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 02:33:53,017 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 (3)] Ended with exit code 0 [2023-12-22 02:33:53,189 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 02:33:53,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:53,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1898199667, now seen corresponding path program 1 times [2023-12-22 02:33:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:53,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007694436] [2023-12-22 02:33:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:53,191 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 02:33:53,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:53,193 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 02:33:53,204 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 02:33:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:53,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:33:53,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:53,296 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 02:33:53,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:53,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007694436] [2023-12-22 02:33:53,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007694436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:53,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:53,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:33:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395388953] [2023-12-22 02:33:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:53,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:33:53,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:53,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:33:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:33:53,299 INFO L87 Difference]: Start difference. First operand 482 states and 693 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 02:33:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:53,399 INFO L93 Difference]: Finished difference Result 806 states and 1139 transitions. [2023-12-22 02:33:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:33:53,399 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 02:33:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:53,402 INFO L225 Difference]: With dead ends: 806 [2023-12-22 02:33:53,402 INFO L226 Difference]: Without dead ends: 500 [2023-12-22 02:33:53,403 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 02:33:53,404 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 6 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:53,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1730 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:33:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-22 02:33:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 490. [2023-12-22 02:33:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 389 states have (on average 1.4730077120822622) internal successors, (573), 397 states have internal predecessors, (573), 59 states have call successors, (59), 35 states have call predecessors, (59), 40 states have return successors, (67), 60 states have call predecessors, (67), 57 states have call successors, (67) [2023-12-22 02:33:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 699 transitions. [2023-12-22 02:33:53,425 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 699 transitions. Word has length 58 [2023-12-22 02:33:53,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:53,426 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 699 transitions. [2023-12-22 02:33:53,426 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 02:33:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 699 transitions. [2023-12-22 02:33:53,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:33:53,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:53,428 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 02:33:53,447 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 02:33:53,631 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 02:33:53,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:53,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -345783631, now seen corresponding path program 1 times [2023-12-22 02:33:53,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:53,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996896696] [2023-12-22 02:33:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:53,633 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 02:33:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:53,634 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 02:33:53,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 02:33:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:53,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:33:53,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:53,721 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 02:33:53,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:53,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:53,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996896696] [2023-12-22 02:33:53,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996896696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:53,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:53,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:33:53,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605840873] [2023-12-22 02:33:53,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:53,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:33:53,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:33:53,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:33:53,723 INFO L87 Difference]: Start difference. First operand 490 states and 699 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 02:33:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:53,821 INFO L93 Difference]: Finished difference Result 816 states and 1142 transitions. [2023-12-22 02:33:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:33:53,822 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 02:33:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:53,824 INFO L225 Difference]: With dead ends: 816 [2023-12-22 02:33:53,824 INFO L226 Difference]: Without dead ends: 502 [2023-12-22 02:33:53,825 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 02:33:53,826 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 3 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:53,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1725 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:33:53,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-22 02:33:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 498. [2023-12-22 02:33:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 395 states have (on average 1.460759493670886) internal successors, (577), 403 states have internal predecessors, (577), 59 states have call successors, (59), 35 states have call predecessors, (59), 42 states have return successors, (69), 62 states have call predecessors, (69), 57 states have call successors, (69) [2023-12-22 02:33:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 705 transitions. [2023-12-22 02:33:53,848 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 705 transitions. Word has length 58 [2023-12-22 02:33:53,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:53,848 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 705 transitions. [2023-12-22 02:33:53,848 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 02:33:53,848 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 705 transitions. [2023-12-22 02:33:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:33:53,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:53,850 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 02:33:53,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 02:33:54,069 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 02:33:54,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:54,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -283744017, now seen corresponding path program 1 times [2023-12-22 02:33:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657332603] [2023-12-22 02:33:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:54,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:54,072 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 02:33:54,075 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 02:33:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:54,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:33:54,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:54,228 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 02:33:54,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:54,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:54,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657332603] [2023-12-22 02:33:54,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657332603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:54,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:54,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:33:54,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372307040] [2023-12-22 02:33:54,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:54,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:33:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:33:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:33:54,230 INFO L87 Difference]: Start difference. First operand 498 states and 705 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 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 02:33:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:54,721 INFO L93 Difference]: Finished difference Result 1220 states and 1691 transitions. [2023-12-22 02:33:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:33:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 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 58 [2023-12-22 02:33:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:54,726 INFO L225 Difference]: With dead ends: 1220 [2023-12-22 02:33:54,727 INFO L226 Difference]: Without dead ends: 896 [2023-12-22 02:33:54,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 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 02:33:54,729 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 280 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:54,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 722 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:33:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-12-22 02:33:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 854. [2023-12-22 02:33:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 667 states have (on average 1.4107946026986506) internal successors, (941), 691 states have internal predecessors, (941), 97 states have call successors, (97), 63 states have call predecessors, (97), 88 states have return successors, (143), 104 states have call predecessors, (143), 95 states have call successors, (143) [2023-12-22 02:33:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1181 transitions. [2023-12-22 02:33:54,778 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1181 transitions. Word has length 58 [2023-12-22 02:33:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:54,778 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1181 transitions. [2023-12-22 02:33:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 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 02:33:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1181 transitions. [2023-12-22 02:33:54,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-22 02:33:54,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:54,780 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 02:33:54,799 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 02:33:54,984 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 02:33:54,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:54,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash -64889299, now seen corresponding path program 1 times [2023-12-22 02:33:54,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:54,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903635859] [2023-12-22 02:33:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:54,985 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 02:33:54,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:54,987 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 02:33:55,004 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 02:33:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:55,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:33:55,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:55,101 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 02:33:55,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:55,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:55,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903635859] [2023-12-22 02:33:55,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903635859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:55,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:55,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:33:55,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400090996] [2023-12-22 02:33:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:55,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:33:55,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:33:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:33:55,103 INFO L87 Difference]: Start difference. First operand 854 states and 1181 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-22 02:33:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:55,495 INFO L93 Difference]: Finished difference Result 2166 states and 2936 transitions. [2023-12-22 02:33:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:33:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-22 02:33:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:55,502 INFO L225 Difference]: With dead ends: 2166 [2023-12-22 02:33:55,502 INFO L226 Difference]: Without dead ends: 1504 [2023-12-22 02:33:55,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:33:55,505 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 492 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:55,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 392 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:33:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-12-22 02:33:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1500. [2023-12-22 02:33:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1151 states have (on average 1.3657688966116421) internal successors, (1572), 1200 states have internal predecessors, (1572), 175 states have call successors, (175), 119 states have call predecessors, (175), 172 states have return successors, (285), 189 states have call predecessors, (285), 173 states have call successors, (285) [2023-12-22 02:33:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2032 transitions. [2023-12-22 02:33:55,580 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2032 transitions. Word has length 58 [2023-12-22 02:33:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:55,580 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 2032 transitions. [2023-12-22 02:33:55,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-22 02:33:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2032 transitions. [2023-12-22 02:33:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-22 02:33:55,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:55,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:55,599 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 02:33:55,786 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 02:33:55,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:55,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:55,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1823096331, now seen corresponding path program 1 times [2023-12-22 02:33:55,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:55,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114754011] [2023-12-22 02:33:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:55,787 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 02:33:55,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:55,788 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 02:33:55,794 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 02:33:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:55,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:33:55,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:55,906 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 02:33:55,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:55,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114754011] [2023-12-22 02:33:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114754011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:55,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:55,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:33:55,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905932519] [2023-12-22 02:33:55,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:55,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:33:55,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:55,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:33:55,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:55,908 INFO L87 Difference]: Start difference. First operand 1500 states and 2032 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:33:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:56,063 INFO L93 Difference]: Finished difference Result 4002 states and 5353 transitions. [2023-12-22 02:33:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:33:56,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2023-12-22 02:33:56,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:56,074 INFO L225 Difference]: With dead ends: 4002 [2023-12-22 02:33:56,074 INFO L226 Difference]: Without dead ends: 2706 [2023-12-22 02:33:56,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:56,079 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 314 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:56,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 441 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:33:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2023-12-22 02:33:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2622. [2023-12-22 02:33:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 1985 states have (on average 1.3209068010075566) internal successors, (2622), 2076 states have internal predecessors, (2622), 305 states have call successors, (305), 231 states have call predecessors, (305), 330 states have return successors, (505), 323 states have call predecessors, (505), 303 states have call successors, (505) [2023-12-22 02:33:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3432 transitions. [2023-12-22 02:33:56,236 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3432 transitions. Word has length 59 [2023-12-22 02:33:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:56,236 INFO L495 AbstractCegarLoop]: Abstraction has 2622 states and 3432 transitions. [2023-12-22 02:33:56,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:33:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3432 transitions. [2023-12-22 02:33:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:33:56,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:56,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:56,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 02:33:56,442 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 02:33:56,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:56,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash -652593130, now seen corresponding path program 1 times [2023-12-22 02:33:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:56,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486141855] [2023-12-22 02:33:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:56,444 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 02:33:56,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:56,445 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 02:33:56,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 02:33:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:56,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:33:56,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:56,556 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 02:33:56,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:56,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486141855] [2023-12-22 02:33:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486141855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:56,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:56,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:33:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78665752] [2023-12-22 02:33:56,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:56,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:33:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:33:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:56,558 INFO L87 Difference]: Start difference. First operand 2622 states and 3432 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:33:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:56,748 INFO L93 Difference]: Finished difference Result 5562 states and 7273 transitions. [2023-12-22 02:33:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:33:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2023-12-22 02:33:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:56,758 INFO L225 Difference]: With dead ends: 5562 [2023-12-22 02:33:56,758 INFO L226 Difference]: Without dead ends: 3116 [2023-12-22 02:33:56,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:56,763 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 63 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:56,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 668 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:33:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2023-12-22 02:33:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3076. [2023-12-22 02:33:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 2327 states have (on average 1.3008165019338205) internal successors, (3027), 2407 states have internal predecessors, (3027), 361 states have call successors, (361), 287 states have call predecessors, (361), 386 states have return successors, (552), 386 states have call predecessors, (552), 359 states have call successors, (552) [2023-12-22 02:33:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3940 transitions. [2023-12-22 02:33:56,908 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3940 transitions. Word has length 60 [2023-12-22 02:33:56,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:56,908 INFO L495 AbstractCegarLoop]: Abstraction has 3076 states and 3940 transitions. [2023-12-22 02:33:56,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:33:56,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3940 transitions. [2023-12-22 02:33:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-22 02:33:56,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:56,910 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:56,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 02:33:57,113 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 02:33:57,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:57,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1591850236, now seen corresponding path program 1 times [2023-12-22 02:33:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:57,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400723644] [2023-12-22 02:33:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:57,115 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 02:33:57,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:57,116 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 02:33:57,119 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 02:33:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:57,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:33:57,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:33:57,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:57,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:57,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400723644] [2023-12-22 02:33:57,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400723644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:57,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:57,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:33:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342295636] [2023-12-22 02:33:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:57,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:33:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:33:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:33:57,197 INFO L87 Difference]: Start difference. First operand 3076 states and 3940 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:33:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:57,490 INFO L93 Difference]: Finished difference Result 3696 states and 4713 transitions. [2023-12-22 02:33:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:33:57,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-22 02:33:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:57,503 INFO L225 Difference]: With dead ends: 3696 [2023-12-22 02:33:57,503 INFO L226 Difference]: Without dead ends: 3693 [2023-12-22 02:33:57,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:33:57,506 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 681 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:57,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 436 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:33:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2023-12-22 02:33:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3659. [2023-12-22 02:33:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2765 states have (on average 1.2933092224231464) internal successors, (3576), 2859 states have internal predecessors, (3576), 426 states have call successors, (426), 343 states have call predecessors, (426), 466 states have return successors, (655), 461 states have call predecessors, (655), 425 states have call successors, (655) [2023-12-22 02:33:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 4657 transitions. [2023-12-22 02:33:57,691 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 4657 transitions. Word has length 67 [2023-12-22 02:33:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:57,692 INFO L495 AbstractCegarLoop]: Abstraction has 3659 states and 4657 transitions. [2023-12-22 02:33:57,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:33:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 4657 transitions. [2023-12-22 02:33:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-22 02:33:57,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:57,693 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:57,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 02:33:57,897 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 02:33:57,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:57,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2101865471, now seen corresponding path program 1 times [2023-12-22 02:33:57,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:57,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713215369] [2023-12-22 02:33:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:33:57,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:33:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:57,899 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 02:33:57,901 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 02:33:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:33:57,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:33:57,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:33:58,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:33:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:33:58,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713215369] [2023-12-22 02:33:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713215369] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:33:58,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:33:58,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-22 02:33:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645180079] [2023-12-22 02:33:58,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:33:58,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 02:33:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:58,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 02:33:58,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:33:58,319 INFO L87 Difference]: Start difference. First operand 3659 states and 4657 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-22 02:33:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:33:58,964 INFO L93 Difference]: Finished difference Result 8198 states and 10413 transitions. [2023-12-22 02:33:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:33:58,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 68 [2023-12-22 02:33:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:33:58,987 INFO L225 Difference]: With dead ends: 8198 [2023-12-22 02:33:58,987 INFO L226 Difference]: Without dead ends: 8195 [2023-12-22 02:33:58,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:33:58,990 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1050 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:33:58,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1378 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:33:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8195 states. [2023-12-22 02:33:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8195 to 6013. [2023-12-22 02:33:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6013 states, 4539 states have (on average 1.2901520158625248) internal successors, (5856), 4699 states have internal predecessors, (5856), 690 states have call successors, (690), 567 states have call predecessors, (690), 782 states have return successors, (1089), 751 states have call predecessors, (1089), 689 states have call successors, (1089) [2023-12-22 02:33:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 7635 transitions. [2023-12-22 02:33:59,368 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 7635 transitions. Word has length 68 [2023-12-22 02:33:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:33:59,369 INFO L495 AbstractCegarLoop]: Abstraction has 6013 states and 7635 transitions. [2023-12-22 02:33:59,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-22 02:33:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 7635 transitions. [2023-12-22 02:33:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-22 02:33:59,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:33:59,371 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:33:59,389 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 02:33:59,591 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 02:33:59,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:33:59,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:33:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -697886660, now seen corresponding path program 2 times [2023-12-22 02:33:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:33:59,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353010579] [2023-12-22 02:33:59,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 02:33:59,594 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 02:33:59,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:33:59,595 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 02:33:59,614 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 02:33:59,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 02:33:59,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 02:33:59,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:33:59,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:33:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:33:59,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:33:59,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:33:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353010579] [2023-12-22 02:33:59,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353010579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:33:59,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:33:59,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:33:59,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959944460] [2023-12-22 02:33:59,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:33:59,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:33:59,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:33:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:33:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:33:59,690 INFO L87 Difference]: Start difference. First operand 6013 states and 7635 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:00,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:00,066 INFO L93 Difference]: Finished difference Result 8984 states and 11491 transitions. [2023-12-22 02:34:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-22 02:34:00,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:00,082 INFO L225 Difference]: With dead ends: 8984 [2023-12-22 02:34:00,082 INFO L226 Difference]: Without dead ends: 3681 [2023-12-22 02:34:00,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:00,093 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 345 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:00,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 511 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2023-12-22 02:34:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3657. [2023-12-22 02:34:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 2767 states have (on average 1.2757499096494398) internal successors, (3530), 2857 states have internal predecessors, (3530), 426 states have call successors, (426), 343 states have call predecessors, (426), 462 states have return successors, (623), 461 states have call predecessors, (623), 425 states have call successors, (623) [2023-12-22 02:34:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 4579 transitions. [2023-12-22 02:34:00,345 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 4579 transitions. Word has length 71 [2023-12-22 02:34:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:00,346 INFO L495 AbstractCegarLoop]: Abstraction has 3657 states and 4579 transitions. [2023-12-22 02:34:00,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-22 02:34:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 4579 transitions. [2023-12-22 02:34:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 02:34:00,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:00,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:00,354 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 (12)] Ended with exit code 0 [2023-12-22 02:34:00,552 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 02:34:00,552 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:00,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1103290916, now seen corresponding path program 1 times [2023-12-22 02:34:00,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:00,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584749493] [2023-12-22 02:34:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:00,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:00,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:00,554 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 02:34:00,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 02:34:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:00,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:00,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:00,669 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 02:34:00,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:00,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584749493] [2023-12-22 02:34:00,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584749493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:00,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:00,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:00,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104926746] [2023-12-22 02:34:00,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:00,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:00,671 INFO L87 Difference]: Start difference. First operand 3657 states and 4579 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:34:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:01,273 INFO L93 Difference]: Finished difference Result 10094 states and 12538 transitions. [2023-12-22 02:34:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:01,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2023-12-22 02:34:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:01,308 INFO L225 Difference]: With dead ends: 10094 [2023-12-22 02:34:01,309 INFO L226 Difference]: Without dead ends: 5305 [2023-12-22 02:34:01,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:01,322 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 84 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:01,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 756 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5305 states. [2023-12-22 02:34:01,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5305 to 5305. [2023-12-22 02:34:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 3977 states have (on average 1.256977621322605) internal successors, (4999), 4112 states have internal predecessors, (4999), 624 states have call successors, (624), 511 states have call predecessors, (624), 702 states have return successors, (947), 686 states have call predecessors, (947), 623 states have call successors, (947) [2023-12-22 02:34:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 6570 transitions. [2023-12-22 02:34:01,658 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 6570 transitions. Word has length 76 [2023-12-22 02:34:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:01,659 INFO L495 AbstractCegarLoop]: Abstraction has 5305 states and 6570 transitions. [2023-12-22 02:34:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:34:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 6570 transitions. [2023-12-22 02:34:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-22 02:34:01,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:01,662 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:01,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-22 02:34:01,865 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 02:34:01,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash 721042744, now seen corresponding path program 1 times [2023-12-22 02:34:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555565990] [2023-12-22 02:34:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:01,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:01,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:01,885 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 02:34:01,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 02:34:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:01,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:01,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:34:02,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:02,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555565990] [2023-12-22 02:34:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555565990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:02,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:02,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809087042] [2023-12-22 02:34:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:02,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:02,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:02,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:02,017 INFO L87 Difference]: Start difference. First operand 5305 states and 6570 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:02,593 INFO L93 Difference]: Finished difference Result 10452 states and 12902 transitions. [2023-12-22 02:34:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2023-12-22 02:34:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:02,608 INFO L225 Difference]: With dead ends: 10452 [2023-12-22 02:34:02,609 INFO L226 Difference]: Without dead ends: 5335 [2023-12-22 02:34:02,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:02,618 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 473 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:02,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 380 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2023-12-22 02:34:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 5335. [2023-12-22 02:34:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5335 states, 3992 states have (on average 1.2394789579158316) internal successors, (4948), 4142 states have internal predecessors, (4948), 624 states have call successors, (624), 511 states have call predecessors, (624), 717 states have return successors, (947), 686 states have call predecessors, (947), 623 states have call successors, (947) [2023-12-22 02:34:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5335 states to 5335 states and 6519 transitions. [2023-12-22 02:34:02,934 INFO L78 Accepts]: Start accepts. Automaton has 5335 states and 6519 transitions. Word has length 85 [2023-12-22 02:34:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:02,934 INFO L495 AbstractCegarLoop]: Abstraction has 5335 states and 6519 transitions. [2023-12-22 02:34:02,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5335 states and 6519 transitions. [2023-12-22 02:34:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:02,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:02,936 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] [2023-12-22 02:34:02,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-22 02:34:03,140 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 02:34:03,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:03,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1254542137, now seen corresponding path program 1 times [2023-12-22 02:34:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786958022] [2023-12-22 02:34:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:03,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:03,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:03,143 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 02:34:03,144 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 02:34:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:03,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:03,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:03,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:03,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:03,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786958022] [2023-12-22 02:34:03,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786958022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:03,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377232386] [2023-12-22 02:34:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:03,282 INFO L87 Difference]: Start difference. First operand 5335 states and 6519 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:04,099 INFO L93 Difference]: Finished difference Result 5656 states and 7024 transitions. [2023-12-22 02:34:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:34:04,099 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:04,119 INFO L225 Difference]: With dead ends: 5656 [2023-12-22 02:34:04,119 INFO L226 Difference]: Without dead ends: 5504 [2023-12-22 02:34:04,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:04,122 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 599 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:04,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 769 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:34:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2023-12-22 02:34:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5491. [2023-12-22 02:34:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 4128 states have (on average 1.250968992248062) internal successors, (5164), 4279 states have internal predecessors, (5164), 637 states have call successors, (637), 517 states have call predecessors, (637), 724 states have return successors, (961), 699 states have call predecessors, (961), 636 states have call successors, (961) [2023-12-22 02:34:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 6762 transitions. [2023-12-22 02:34:04,506 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 6762 transitions. Word has length 81 [2023-12-22 02:34:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:04,506 INFO L495 AbstractCegarLoop]: Abstraction has 5491 states and 6762 transitions. [2023-12-22 02:34:04,507 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 6762 transitions. [2023-12-22 02:34:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:04,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:04,511 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] [2023-12-22 02:34:04,530 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 02:34:04,715 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 02:34:04,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:04,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash -300601979, now seen corresponding path program 1 times [2023-12-22 02:34:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:04,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111852525] [2023-12-22 02:34:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:04,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:04,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:04,717 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 02:34:04,721 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 (16)] Waiting until timeout for monitored process [2023-12-22 02:34:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:04,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:04,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:04,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:04,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111852525] [2023-12-22 02:34:04,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111852525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:04,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:04,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:04,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607230739] [2023-12-22 02:34:04,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:04,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:04,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:04,853 INFO L87 Difference]: Start difference. First operand 5491 states and 6762 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:05,426 INFO L93 Difference]: Finished difference Result 5799 states and 7247 transitions. [2023-12-22 02:34:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:05,426 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:05,438 INFO L225 Difference]: With dead ends: 5799 [2023-12-22 02:34:05,439 INFO L226 Difference]: Without dead ends: 5491 [2023-12-22 02:34:05,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:05,441 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 472 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:05,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 533 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2023-12-22 02:34:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5491. [2023-12-22 02:34:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 4128 states have (on average 1.2492732558139534) internal successors, (5157), 4279 states have internal predecessors, (5157), 637 states have call successors, (637), 517 states have call predecessors, (637), 724 states have return successors, (961), 699 states have call predecessors, (961), 636 states have call successors, (961) [2023-12-22 02:34:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 6755 transitions. [2023-12-22 02:34:05,838 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 6755 transitions. Word has length 81 [2023-12-22 02:34:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:05,839 INFO L495 AbstractCegarLoop]: Abstraction has 5491 states and 6755 transitions. [2023-12-22 02:34:05,839 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 6755 transitions. [2023-12-22 02:34:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:05,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:05,841 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] [2023-12-22 02:34:05,846 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 02:34:06,047 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 02:34:06,047 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:06,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1454716091, now seen corresponding path program 1 times [2023-12-22 02:34:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016698182] [2023-12-22 02:34:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:06,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:06,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:06,049 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 02:34:06,080 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 02:34:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:06,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:06,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:06,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:06,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:06,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016698182] [2023-12-22 02:34:06,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016698182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:06,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:06,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:06,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351460430] [2023-12-22 02:34:06,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:06,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:06,157 INFO L87 Difference]: Start difference. First operand 5491 states and 6755 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:06,766 INFO L93 Difference]: Finished difference Result 5799 states and 7233 transitions. [2023-12-22 02:34:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:06,766 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:06,782 INFO L225 Difference]: With dead ends: 5799 [2023-12-22 02:34:06,782 INFO L226 Difference]: Without dead ends: 5491 [2023-12-22 02:34:06,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:06,785 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 466 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:06,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 526 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:06,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2023-12-22 02:34:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5491. [2023-12-22 02:34:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 4128 states have (on average 1.247577519379845) internal successors, (5150), 4279 states have internal predecessors, (5150), 637 states have call successors, (637), 517 states have call predecessors, (637), 724 states have return successors, (961), 699 states have call predecessors, (961), 636 states have call successors, (961) [2023-12-22 02:34:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 6748 transitions. [2023-12-22 02:34:07,284 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 6748 transitions. Word has length 81 [2023-12-22 02:34:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:07,284 INFO L495 AbstractCegarLoop]: Abstraction has 5491 states and 6748 transitions. [2023-12-22 02:34:07,286 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 6748 transitions. [2023-12-22 02:34:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:07,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:07,288 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] [2023-12-22 02:34:07,304 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 02:34:07,504 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 02:34:07,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:07,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2046134907, now seen corresponding path program 1 times [2023-12-22 02:34:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:07,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743163764] [2023-12-22 02:34:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:07,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:07,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:07,520 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 02:34:07,568 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 02:34:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:07,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:07,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:07,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:07,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:07,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743163764] [2023-12-22 02:34:07,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743163764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:07,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:07,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315082203] [2023-12-22 02:34:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:07,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:07,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:07,688 INFO L87 Difference]: Start difference. First operand 5491 states and 6748 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:08,451 INFO L93 Difference]: Finished difference Result 5799 states and 7219 transitions. [2023-12-22 02:34:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:08,452 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:08,467 INFO L225 Difference]: With dead ends: 5799 [2023-12-22 02:34:08,468 INFO L226 Difference]: Without dead ends: 5491 [2023-12-22 02:34:08,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:08,471 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 460 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:08,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 519 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2023-12-22 02:34:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5491. [2023-12-22 02:34:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 4128 states have (on average 1.2458817829457365) internal successors, (5143), 4279 states have internal predecessors, (5143), 637 states have call successors, (637), 517 states have call predecessors, (637), 724 states have return successors, (961), 699 states have call predecessors, (961), 636 states have call successors, (961) [2023-12-22 02:34:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 6741 transitions. [2023-12-22 02:34:08,936 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 6741 transitions. Word has length 81 [2023-12-22 02:34:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:08,936 INFO L495 AbstractCegarLoop]: Abstraction has 5491 states and 6741 transitions. [2023-12-22 02:34:08,937 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 6741 transitions. [2023-12-22 02:34:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:08,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:08,941 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] [2023-12-22 02:34:08,957 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 02:34:09,145 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 02:34:09,147 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:09,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:09,148 INFO L85 PathProgramCache]: Analyzing trace with hash 428639045, now seen corresponding path program 1 times [2023-12-22 02:34:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:09,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339754246] [2023-12-22 02:34:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:09,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:09,149 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 02:34:09,176 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 02:34:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:09,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:09,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:09,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:09,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:09,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339754246] [2023-12-22 02:34:09,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339754246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:09,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:09,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381720973] [2023-12-22 02:34:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:09,260 INFO L87 Difference]: Start difference. First operand 5491 states and 6741 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:10,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:10,068 INFO L93 Difference]: Finished difference Result 5799 states and 7205 transitions. [2023-12-22 02:34:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:10,069 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:10,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:10,079 INFO L225 Difference]: With dead ends: 5799 [2023-12-22 02:34:10,079 INFO L226 Difference]: Without dead ends: 5491 [2023-12-22 02:34:10,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:10,081 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 454 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:10,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 512 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:34:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2023-12-22 02:34:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5491. [2023-12-22 02:34:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 4128 states have (on average 1.244186046511628) internal successors, (5136), 4279 states have internal predecessors, (5136), 637 states have call successors, (637), 517 states have call predecessors, (637), 724 states have return successors, (961), 699 states have call predecessors, (961), 636 states have call successors, (961) [2023-12-22 02:34:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 6734 transitions. [2023-12-22 02:34:10,511 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 6734 transitions. Word has length 81 [2023-12-22 02:34:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:10,512 INFO L495 AbstractCegarLoop]: Abstraction has 5491 states and 6734 transitions. [2023-12-22 02:34:10,536 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 6734 transitions. [2023-12-22 02:34:10,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:10,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:10,544 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] [2023-12-22 02:34:10,552 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 02:34:10,749 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 02:34:10,750 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:10,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1431192187, now seen corresponding path program 1 times [2023-12-22 02:34:10,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:10,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132513649] [2023-12-22 02:34:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:10,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:10,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:10,752 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 02:34:10,786 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 02:34:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:10,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:10,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:10,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:10,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:10,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132513649] [2023-12-22 02:34:10,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132513649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:10,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:10,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547829523] [2023-12-22 02:34:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:10,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:10,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:10,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:10,872 INFO L87 Difference]: Start difference. First operand 5491 states and 6734 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:11,609 INFO L93 Difference]: Finished difference Result 5869 states and 7303 transitions. [2023-12-22 02:34:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:11,610 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:11,620 INFO L225 Difference]: With dead ends: 5869 [2023-12-22 02:34:11,620 INFO L226 Difference]: Without dead ends: 5561 [2023-12-22 02:34:11,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:11,622 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 489 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:11,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 506 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5561 states. [2023-12-22 02:34:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5561 to 5561. [2023-12-22 02:34:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5561 states, 4192 states have (on average 1.2454675572519085) internal successors, (5221), 4343 states have internal predecessors, (5221), 639 states have call successors, (639), 521 states have call predecessors, (639), 728 states have return successors, (963), 701 states have call predecessors, (963), 638 states have call successors, (963) [2023-12-22 02:34:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 6823 transitions. [2023-12-22 02:34:12,078 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 6823 transitions. Word has length 81 [2023-12-22 02:34:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:12,079 INFO L495 AbstractCegarLoop]: Abstraction has 5561 states and 6823 transitions. [2023-12-22 02:34:12,079 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 6823 transitions. [2023-12-22 02:34:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:12,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:12,081 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] [2023-12-22 02:34:12,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:12,286 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 02:34:12,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:12,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:12,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1138985222, now seen corresponding path program 1 times [2023-12-22 02:34:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:12,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891449645] [2023-12-22 02:34:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:12,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:12,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:12,288 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 02:34:12,314 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 02:34:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:12,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:12,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:12,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:12,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:12,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891449645] [2023-12-22 02:34:12,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891449645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:12,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:12,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:12,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151006460] [2023-12-22 02:34:12,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:12,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:12,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:12,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:12,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:12,401 INFO L87 Difference]: Start difference. First operand 5561 states and 6823 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:13,223 INFO L93 Difference]: Finished difference Result 6009 states and 7481 transitions. [2023-12-22 02:34:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:13,224 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:13,232 INFO L225 Difference]: With dead ends: 6009 [2023-12-22 02:34:13,232 INFO L226 Difference]: Without dead ends: 5631 [2023-12-22 02:34:13,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:13,235 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 483 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:13,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 499 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2023-12-22 02:34:13,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5631. [2023-12-22 02:34:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5631 states, 4256 states have (on average 1.2457706766917294) internal successors, (5302), 4407 states have internal predecessors, (5302), 641 states have call successors, (641), 525 states have call predecessors, (641), 732 states have return successors, (965), 703 states have call predecessors, (965), 640 states have call successors, (965) [2023-12-22 02:34:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 6908 transitions. [2023-12-22 02:34:13,722 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 6908 transitions. Word has length 81 [2023-12-22 02:34:13,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:13,724 INFO L495 AbstractCegarLoop]: Abstraction has 5631 states and 6908 transitions. [2023-12-22 02:34:13,724 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 6908 transitions. [2023-12-22 02:34:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:13,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:13,726 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] [2023-12-22 02:34:13,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:13,930 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 02:34:13,930 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:13,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2012055866, now seen corresponding path program 1 times [2023-12-22 02:34:13,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:13,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088769266] [2023-12-22 02:34:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:13,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:13,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:13,932 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 02:34:13,961 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 02:34:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:14,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:14,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:14,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:14,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:14,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088769266] [2023-12-22 02:34:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088769266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:14,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883361706] [2023-12-22 02:34:14,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:14,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:14,036 INFO L87 Difference]: Start difference. First operand 5631 states and 6908 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:14,798 INFO L93 Difference]: Finished difference Result 6149 states and 7651 transitions. [2023-12-22 02:34:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:14,799 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:14,810 INFO L225 Difference]: With dead ends: 6149 [2023-12-22 02:34:14,810 INFO L226 Difference]: Without dead ends: 5701 [2023-12-22 02:34:14,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:14,814 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 476 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:14,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 492 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2023-12-22 02:34:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 5701. [2023-12-22 02:34:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 4320 states have (on average 1.2451388888888888) internal successors, (5379), 4471 states have internal predecessors, (5379), 643 states have call successors, (643), 529 states have call predecessors, (643), 736 states have return successors, (967), 705 states have call predecessors, (967), 642 states have call successors, (967) [2023-12-22 02:34:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 6989 transitions. [2023-12-22 02:34:15,337 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 6989 transitions. Word has length 81 [2023-12-22 02:34:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:15,337 INFO L495 AbstractCegarLoop]: Abstraction has 5701 states and 6989 transitions. [2023-12-22 02:34:15,338 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 6989 transitions. [2023-12-22 02:34:15,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:15,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:15,340 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] [2023-12-22 02:34:15,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:15,551 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 02:34:15,552 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:15,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1527806981, now seen corresponding path program 1 times [2023-12-22 02:34:15,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:15,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032852290] [2023-12-22 02:34:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:15,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:15,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:15,554 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 02:34:15,555 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 02:34:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:15,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:15,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:15,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:15,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032852290] [2023-12-22 02:34:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032852290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:15,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581017105] [2023-12-22 02:34:15,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:15,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:15,658 INFO L87 Difference]: Start difference. First operand 5701 states and 6989 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:16,466 INFO L93 Difference]: Finished difference Result 6289 states and 7813 transitions. [2023-12-22 02:34:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:16,467 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:16,475 INFO L225 Difference]: With dead ends: 6289 [2023-12-22 02:34:16,475 INFO L226 Difference]: Without dead ends: 5771 [2023-12-22 02:34:16,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:34:16,477 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 469 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:16,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 485 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2023-12-22 02:34:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5771. [2023-12-22 02:34:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5771 states, 4384 states have (on average 1.2436131386861313) internal successors, (5452), 4535 states have internal predecessors, (5452), 645 states have call successors, (645), 533 states have call predecessors, (645), 740 states have return successors, (969), 707 states have call predecessors, (969), 644 states have call successors, (969) [2023-12-22 02:34:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5771 states to 5771 states and 7066 transitions. [2023-12-22 02:34:17,017 INFO L78 Accepts]: Start accepts. Automaton has 5771 states and 7066 transitions. Word has length 81 [2023-12-22 02:34:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:17,017 INFO L495 AbstractCegarLoop]: Abstraction has 5771 states and 7066 transitions. [2023-12-22 02:34:17,017 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, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5771 states and 7066 transitions. [2023-12-22 02:34:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:17,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:17,020 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] [2023-12-22 02:34:17,036 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 02:34:17,224 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 02:34:17,224 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:17,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1534288220, now seen corresponding path program 1 times [2023-12-22 02:34:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:17,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624178838] [2023-12-22 02:34:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:17,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:17,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:17,227 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 02:34:17,229 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 02:34:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:17,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:17,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:17,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:17,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:17,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624178838] [2023-12-22 02:34:17,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624178838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:17,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:17,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:17,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318040748] [2023-12-22 02:34:17,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:17,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:17,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:17,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:17,315 INFO L87 Difference]: Start difference. First operand 5771 states and 7066 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:17,915 INFO L93 Difference]: Finished difference Result 6638 states and 8252 transitions. [2023-12-22 02:34:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:17,915 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:17,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:17,929 INFO L225 Difference]: With dead ends: 6638 [2023-12-22 02:34:17,930 INFO L226 Difference]: Without dead ends: 6051 [2023-12-22 02:34:17,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 02:34:17,941 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 38 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:17,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 955 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2023-12-22 02:34:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 5791. [2023-12-22 02:34:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5791 states, 4404 states have (on average 1.2425068119891007) internal successors, (5472), 4555 states have internal predecessors, (5472), 645 states have call successors, (645), 533 states have call predecessors, (645), 740 states have return successors, (969), 707 states have call predecessors, (969), 644 states have call successors, (969) [2023-12-22 02:34:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5791 states to 5791 states and 7086 transitions. [2023-12-22 02:34:18,469 INFO L78 Accepts]: Start accepts. Automaton has 5791 states and 7086 transitions. Word has length 81 [2023-12-22 02:34:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:18,469 INFO L495 AbstractCegarLoop]: Abstraction has 5791 states and 7086 transitions. [2023-12-22 02:34:18,469 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5791 states and 7086 transitions. [2023-12-22 02:34:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:18,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:18,472 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] [2023-12-22 02:34:18,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:18,675 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 02:34:18,675 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:18,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 732092966, now seen corresponding path program 1 times [2023-12-22 02:34:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:18,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129884944] [2023-12-22 02:34:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:18,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:18,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:18,677 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 02:34:18,678 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 02:34:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:18,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:18,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:18,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:18,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129884944] [2023-12-22 02:34:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129884944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:18,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738644543] [2023-12-22 02:34:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:18,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:18,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:18,753 INFO L87 Difference]: Start difference. First operand 5791 states and 7086 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:19,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:19,278 INFO L93 Difference]: Finished difference Result 6442 states and 7968 transitions. [2023-12-22 02:34:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:19,278 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:19,288 INFO L225 Difference]: With dead ends: 6442 [2023-12-22 02:34:19,288 INFO L226 Difference]: Without dead ends: 5835 [2023-12-22 02:34:19,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 02:34:19,291 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 29 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:19,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 955 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2023-12-22 02:34:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5795. [2023-12-22 02:34:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5795 states, 4408 states have (on average 1.2404718693284937) internal successors, (5468), 4559 states have internal predecessors, (5468), 645 states have call successors, (645), 533 states have call predecessors, (645), 740 states have return successors, (969), 707 states have call predecessors, (969), 644 states have call successors, (969) [2023-12-22 02:34:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5795 states to 5795 states and 7082 transitions. [2023-12-22 02:34:19,792 INFO L78 Accepts]: Start accepts. Automaton has 5795 states and 7082 transitions. Word has length 81 [2023-12-22 02:34:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:19,792 INFO L495 AbstractCegarLoop]: Abstraction has 5795 states and 7082 transitions. [2023-12-22 02:34:19,792 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5795 states and 7082 transitions. [2023-12-22 02:34:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:19,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:19,795 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] [2023-12-22 02:34:19,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:19,999 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 02:34:19,999 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:19,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1634601628, now seen corresponding path program 1 times [2023-12-22 02:34:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028595057] [2023-12-22 02:34:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:20,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:20,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:20,001 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 02:34:20,030 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 02:34:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:20,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:20,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:20,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:20,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:20,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028595057] [2023-12-22 02:34:20,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028595057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:20,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:20,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106380214] [2023-12-22 02:34:20,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:20,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:20,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:20,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:20,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:20,086 INFO L87 Difference]: Start difference. First operand 5795 states and 7082 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:20,623 INFO L93 Difference]: Finished difference Result 6438 states and 7944 transitions. [2023-12-22 02:34:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:20,624 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:20,633 INFO L225 Difference]: With dead ends: 6438 [2023-12-22 02:34:20,633 INFO L226 Difference]: Without dead ends: 5827 [2023-12-22 02:34:20,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 02:34:20,636 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 20 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:20,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 953 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2023-12-22 02:34:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5799. [2023-12-22 02:34:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5799 states, 4412 states have (on average 1.2384406165004533) internal successors, (5464), 4563 states have internal predecessors, (5464), 645 states have call successors, (645), 533 states have call predecessors, (645), 740 states have return successors, (969), 707 states have call predecessors, (969), 644 states have call successors, (969) [2023-12-22 02:34:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5799 states to 5799 states and 7078 transitions. [2023-12-22 02:34:21,222 INFO L78 Accepts]: Start accepts. Automaton has 5799 states and 7078 transitions. Word has length 81 [2023-12-22 02:34:21,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:21,223 INFO L495 AbstractCegarLoop]: Abstraction has 5799 states and 7078 transitions. [2023-12-22 02:34:21,223 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5799 states and 7078 transitions. [2023-12-22 02:34:21,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:21,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:21,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:21,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:21,428 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 02:34:21,428 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:21,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1210954906, now seen corresponding path program 1 times [2023-12-22 02:34:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:21,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173393952] [2023-12-22 02:34:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:21,430 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 02:34:21,459 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 02:34:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:21,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:21,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:21,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:21,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173393952] [2023-12-22 02:34:21,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173393952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:21,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:21,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:21,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979136882] [2023-12-22 02:34:21,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:21,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:21,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:21,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:21,511 INFO L87 Difference]: Start difference. First operand 5799 states and 7078 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:22,072 INFO L93 Difference]: Finished difference Result 6434 states and 7920 transitions. [2023-12-22 02:34:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:22,073 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:22,084 INFO L225 Difference]: With dead ends: 6434 [2023-12-22 02:34:22,084 INFO L226 Difference]: Without dead ends: 5819 [2023-12-22 02:34:22,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 02:34:22,087 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 11 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:22,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 954 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2023-12-22 02:34:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 5803. [2023-12-22 02:34:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 4416 states have (on average 1.236413043478261) internal successors, (5460), 4567 states have internal predecessors, (5460), 645 states have call successors, (645), 533 states have call predecessors, (645), 740 states have return successors, (969), 707 states have call predecessors, (969), 644 states have call successors, (969) [2023-12-22 02:34:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 7074 transitions. [2023-12-22 02:34:22,622 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 7074 transitions. Word has length 81 [2023-12-22 02:34:22,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:22,622 INFO L495 AbstractCegarLoop]: Abstraction has 5803 states and 7074 transitions. [2023-12-22 02:34:22,622 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 7074 transitions. [2023-12-22 02:34:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:22,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:22,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:22,628 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 02:34:22,828 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 02:34:22,830 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:22,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1605321692, now seen corresponding path program 1 times [2023-12-22 02:34:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:22,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427537944] [2023-12-22 02:34:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:22,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:22,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:22,832 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 02:34:22,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 02:34:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:22,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:22,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:22,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:22,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427537944] [2023-12-22 02:34:22,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427537944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:22,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:22,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:22,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156455935] [2023-12-22 02:34:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:22,909 INFO L87 Difference]: Start difference. First operand 5803 states and 7074 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:23,411 INFO L93 Difference]: Finished difference Result 6430 states and 7896 transitions. [2023-12-22 02:34:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:34:23,412 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:23,422 INFO L225 Difference]: With dead ends: 6430 [2023-12-22 02:34:23,422 INFO L226 Difference]: Without dead ends: 5811 [2023-12-22 02:34:23,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 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 02:34:23,425 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:23,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 955 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2023-12-22 02:34:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5807. [2023-12-22 02:34:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5807 states, 4420 states have (on average 1.2343891402714933) internal successors, (5456), 4571 states have internal predecessors, (5456), 645 states have call successors, (645), 533 states have call predecessors, (645), 740 states have return successors, (969), 707 states have call predecessors, (969), 644 states have call successors, (969) [2023-12-22 02:34:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 7070 transitions. [2023-12-22 02:34:23,932 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 7070 transitions. Word has length 81 [2023-12-22 02:34:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:23,933 INFO L495 AbstractCegarLoop]: Abstraction has 5807 states and 7070 transitions. [2023-12-22 02:34:23,933 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:23,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 7070 transitions. [2023-12-22 02:34:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:23,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:23,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:23,952 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 02:34:24,139 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 02:34:24,139 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:24,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash -903721818, now seen corresponding path program 1 times [2023-12-22 02:34:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:24,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019807247] [2023-12-22 02:34:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:24,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:24,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:24,141 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 02:34:24,152 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 02:34:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:24,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:34:24,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:24,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:24,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019807247] [2023-12-22 02:34:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019807247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:24,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744390438] [2023-12-22 02:34:24,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:24,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:24,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:24,289 INFO L87 Difference]: Start difference. First operand 5807 states and 7070 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:25,159 INFO L93 Difference]: Finished difference Result 6535 states and 7997 transitions. [2023-12-22 02:34:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:34:25,160 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-22 02:34:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:25,171 INFO L225 Difference]: With dead ends: 6535 [2023-12-22 02:34:25,171 INFO L226 Difference]: Without dead ends: 5911 [2023-12-22 02:34:25,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 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 02:34:25,173 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 456 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:25,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 479 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2023-12-22 02:34:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 5855. [2023-12-22 02:34:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5855 states, 4466 states have (on average 1.229064039408867) internal successors, (5489), 4617 states have internal predecessors, (5489), 645 states have call successors, (645), 535 states have call predecessors, (645), 742 states have return successors, (969), 707 states have call predecessors, (969), 644 states have call successors, (969) [2023-12-22 02:34:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5855 states to 5855 states and 7103 transitions. [2023-12-22 02:34:25,740 INFO L78 Accepts]: Start accepts. Automaton has 5855 states and 7103 transitions. Word has length 81 [2023-12-22 02:34:25,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:25,740 INFO L495 AbstractCegarLoop]: Abstraction has 5855 states and 7103 transitions. [2023-12-22 02:34:25,740 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, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:34:25,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5855 states and 7103 transitions. [2023-12-22 02:34:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-22 02:34:25,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:25,743 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] [2023-12-22 02:34:25,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-22 02:34:25,946 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 02:34:25,947 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:25,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash -684867100, now seen corresponding path program 1 times [2023-12-22 02:34:25,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:25,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722678414] [2023-12-22 02:34:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:25,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:25,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:25,949 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 02:34:25,951 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 02:34:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:26,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:26,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:34:26,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:26,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:26,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722678414] [2023-12-22 02:34:26,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722678414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:26,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:26,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:34:26,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866131800] [2023-12-22 02:34:26,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:26,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:26,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:26,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:26,128 INFO L87 Difference]: Start difference. First operand 5855 states and 7103 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:34:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:26,799 INFO L93 Difference]: Finished difference Result 7172 states and 8728 transitions. [2023-12-22 02:34:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:26,800 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 81 [2023-12-22 02:34:26,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:26,815 INFO L225 Difference]: With dead ends: 7172 [2023-12-22 02:34:26,815 INFO L226 Difference]: Without dead ends: 6501 [2023-12-22 02:34:26,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:26,820 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 257 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:26,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 531 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2023-12-22 02:34:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 6499. [2023-12-22 02:34:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 5044 states have (on average 1.2264076130055512) internal successors, (6186), 5198 states have internal predecessors, (6186), 680 states have call successors, (680), 565 states have call predecessors, (680), 773 states have return successors, (1005), 740 states have call predecessors, (1005), 679 states have call successors, (1005) [2023-12-22 02:34:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 7871 transitions. [2023-12-22 02:34:27,565 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 7871 transitions. Word has length 81 [2023-12-22 02:34:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:27,565 INFO L495 AbstractCegarLoop]: Abstraction has 6499 states and 7871 transitions. [2023-12-22 02:34:27,565 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:34:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 7871 transitions. [2023-12-22 02:34:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-22 02:34:27,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:27,568 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:27,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-22 02:34:27,772 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 02:34:27,772 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:27,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 420435187, now seen corresponding path program 1 times [2023-12-22 02:34:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:27,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678844393] [2023-12-22 02:34:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:27,773 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 02:34:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:27,775 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 02:34:27,776 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 02:34:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:27,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:27,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:34:27,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:27,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:27,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678844393] [2023-12-22 02:34:27,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678844393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:27,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:27,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698262067] [2023-12-22 02:34:27,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:27,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:27,874 INFO L87 Difference]: Start difference. First operand 6499 states and 7871 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:34:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:28,595 INFO L93 Difference]: Finished difference Result 11405 states and 13809 transitions. [2023-12-22 02:34:28,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:28,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2023-12-22 02:34:28,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:28,611 INFO L225 Difference]: With dead ends: 11405 [2023-12-22 02:34:28,611 INFO L226 Difference]: Without dead ends: 6248 [2023-12-22 02:34:28,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:28,622 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 95 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:28,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 693 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:34:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2023-12-22 02:34:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 6245. [2023-12-22 02:34:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6245 states, 4860 states have (on average 1.2156378600823046) internal successors, (5908), 5008 states have internal predecessors, (5908), 642 states have call successors, (642), 537 states have call predecessors, (642), 741 states have return successors, (888), 702 states have call predecessors, (888), 641 states have call successors, (888) [2023-12-22 02:34:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6245 states to 6245 states and 7438 transitions. [2023-12-22 02:34:29,284 INFO L78 Accepts]: Start accepts. Automaton has 6245 states and 7438 transitions. Word has length 86 [2023-12-22 02:34:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:29,284 INFO L495 AbstractCegarLoop]: Abstraction has 6245 states and 7438 transitions. [2023-12-22 02:34:29,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:34:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6245 states and 7438 transitions. [2023-12-22 02:34:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-22 02:34:29,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:29,288 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] [2023-12-22 02:34:29,292 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 (31)] Ended with exit code 0 [2023-12-22 02:34:29,492 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 02:34:29,492 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:29,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash -74873292, now seen corresponding path program 1 times [2023-12-22 02:34:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346928062] [2023-12-22 02:34:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:29,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:29,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:29,495 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 02:34:29,497 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 02:34:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:29,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:29,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:29,691 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 02:34:29,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:29,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:29,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346928062] [2023-12-22 02:34:29,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346928062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:29,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:29,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:34:29,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940675244] [2023-12-22 02:34:29,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:29,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:29,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:29,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:29,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:29,694 INFO L87 Difference]: Start difference. First operand 6245 states and 7438 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:34:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:30,363 INFO L93 Difference]: Finished difference Result 8684 states and 10417 transitions. [2023-12-22 02:34:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:30,364 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-12-22 02:34:30,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:30,379 INFO L225 Difference]: With dead ends: 8684 [2023-12-22 02:34:30,379 INFO L226 Difference]: Without dead ends: 7369 [2023-12-22 02:34:30,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:30,383 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 250 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:30,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 532 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2023-12-22 02:34:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7363. [2023-12-22 02:34:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7363 states, 5862 states have (on average 1.2125554418287274) internal successors, (7108), 6014 states have internal predecessors, (7108), 704 states have call successors, (704), 589 states have call predecessors, (704), 795 states have return successors, (952), 762 states have call predecessors, (952), 703 states have call successors, (952) [2023-12-22 02:34:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7363 states to 7363 states and 8764 transitions. [2023-12-22 02:34:31,039 INFO L78 Accepts]: Start accepts. Automaton has 7363 states and 8764 transitions. Word has length 131 [2023-12-22 02:34:31,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:31,039 INFO L495 AbstractCegarLoop]: Abstraction has 7363 states and 8764 transitions. [2023-12-22 02:34:31,040 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:34:31,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7363 states and 8764 transitions. [2023-12-22 02:34:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-22 02:34:31,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:31,044 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] [2023-12-22 02:34:31,055 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 02:34:31,248 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 02:34:31,249 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:31,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash -926329259, now seen corresponding path program 1 times [2023-12-22 02:34:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806360020] [2023-12-22 02:34:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:31,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:31,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:31,251 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 02:34:31,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-22 02:34:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:31,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:34:31,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:31,476 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 02:34:31,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:31,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806360020] [2023-12-22 02:34:31,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806360020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:31,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:31,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601010712] [2023-12-22 02:34:31,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:31,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:31,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:31,479 INFO L87 Difference]: Start difference. First operand 7363 states and 8764 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:32,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:32,448 INFO L93 Difference]: Finished difference Result 12112 states and 14467 transitions. [2023-12-22 02:34:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:32,448 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 131 [2023-12-22 02:34:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:32,465 INFO L225 Difference]: With dead ends: 12112 [2023-12-22 02:34:32,465 INFO L226 Difference]: Without dead ends: 9680 [2023-12-22 02:34:32,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:32,469 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 410 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:32,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 642 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9680 states. [2023-12-22 02:34:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9680 to 9678. [2023-12-22 02:34:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9678 states, 7934 states have (on average 1.2063271993950089) internal successors, (9571), 8099 states have internal predecessors, (9571), 831 states have call successors, (831), 693 states have call predecessors, (831), 911 states have return successors, (1115), 889 states have call predecessors, (1115), 830 states have call successors, (1115) [2023-12-22 02:34:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9678 states to 9678 states and 11517 transitions. [2023-12-22 02:34:33,264 INFO L78 Accepts]: Start accepts. Automaton has 9678 states and 11517 transitions. Word has length 131 [2023-12-22 02:34:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:33,265 INFO L495 AbstractCegarLoop]: Abstraction has 9678 states and 11517 transitions. [2023-12-22 02:34:33,265 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 9678 states and 11517 transitions. [2023-12-22 02:34:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-22 02:34:33,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:33,272 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] [2023-12-22 02:34:33,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-22 02:34:33,496 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 02:34:33,497 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:33,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 20708627, now seen corresponding path program 1 times [2023-12-22 02:34:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:33,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882233848] [2023-12-22 02:34:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:33,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:33,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:33,499 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 02:34:33,500 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 02:34:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:33,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:33,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:33,595 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 02:34:33,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:33,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882233848] [2023-12-22 02:34:33,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882233848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:33,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:33,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648746944] [2023-12-22 02:34:33,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:33,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:33,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:33,598 INFO L87 Difference]: Start difference. First operand 9678 states and 11517 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:34,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:34,295 INFO L93 Difference]: Finished difference Result 13312 states and 15844 transitions. [2023-12-22 02:34:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:34,296 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-22 02:34:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:34,308 INFO L225 Difference]: With dead ends: 13312 [2023-12-22 02:34:34,308 INFO L226 Difference]: Without dead ends: 8565 [2023-12-22 02:34:34,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:34,314 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 218 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:34,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 426 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8565 states. [2023-12-22 02:34:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8565 to 8565. [2023-12-22 02:34:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8565 states, 6940 states have (on average 1.2073487031700287) internal successors, (8379), 7100 states have internal predecessors, (8379), 766 states have call successors, (766), 641 states have call predecessors, (766), 857 states have return successors, (1036), 826 states have call predecessors, (1036), 765 states have call successors, (1036) [2023-12-22 02:34:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8565 states to 8565 states and 10181 transitions. [2023-12-22 02:34:35,016 INFO L78 Accepts]: Start accepts. Automaton has 8565 states and 10181 transitions. Word has length 131 [2023-12-22 02:34:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:35,016 INFO L495 AbstractCegarLoop]: Abstraction has 8565 states and 10181 transitions. [2023-12-22 02:34:35,016 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 8565 states and 10181 transitions. [2023-12-22 02:34:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-22 02:34:35,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:35,020 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] [2023-12-22 02:34:35,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-22 02:34:35,224 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 02:34:35,225 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:35,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:35,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1936543258, now seen corresponding path program 1 times [2023-12-22 02:34:35,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:35,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487782387] [2023-12-22 02:34:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:35,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:35,227 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 02:34:35,228 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 02:34:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:35,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:34:35,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:35,422 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 02:34:35,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:35,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:35,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487782387] [2023-12-22 02:34:35,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487782387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:35,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:35,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:35,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791006369] [2023-12-22 02:34:35,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:35,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:35,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:35,424 INFO L87 Difference]: Start difference. First operand 8565 states and 10181 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:36,610 INFO L93 Difference]: Finished difference Result 15377 states and 18298 transitions. [2023-12-22 02:34:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:36,610 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 133 [2023-12-22 02:34:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:36,641 INFO L225 Difference]: With dead ends: 15377 [2023-12-22 02:34:36,642 INFO L226 Difference]: Without dead ends: 11743 [2023-12-22 02:34:36,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:36,647 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 401 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:36,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 621 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11743 states. [2023-12-22 02:34:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 11741. [2023-12-22 02:34:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11741 states, 9781 states have (on average 1.201104181576526) internal successors, (11748), 9962 states have internal predecessors, (11748), 939 states have call successors, (939), 781 states have call predecessors, (939), 1019 states have return successors, (1255), 1001 states have call predecessors, (1255), 938 states have call successors, (1255) [2023-12-22 02:34:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11741 states to 11741 states and 13942 transitions. [2023-12-22 02:34:37,710 INFO L78 Accepts]: Start accepts. Automaton has 11741 states and 13942 transitions. Word has length 133 [2023-12-22 02:34:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:37,710 INFO L495 AbstractCegarLoop]: Abstraction has 11741 states and 13942 transitions. [2023-12-22 02:34:37,710 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11741 states and 13942 transitions. [2023-12-22 02:34:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-22 02:34:37,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:37,716 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] [2023-12-22 02:34:37,724 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 02:34:37,920 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 02:34:37,920 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:37,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1229946652, now seen corresponding path program 1 times [2023-12-22 02:34:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:37,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790385433] [2023-12-22 02:34:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:37,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:37,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:37,922 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 02:34:37,973 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 02:34:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:38,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:38,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:38,042 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 02:34:38,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:38,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:38,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790385433] [2023-12-22 02:34:38,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790385433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:38,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:38,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:38,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520141945] [2023-12-22 02:34:38,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:38,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:38,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:38,044 INFO L87 Difference]: Start difference. First operand 11741 states and 13942 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:38,926 INFO L93 Difference]: Finished difference Result 18545 states and 22019 transitions. [2023-12-22 02:34:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:38,927 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 133 [2023-12-22 02:34:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:38,946 INFO L225 Difference]: With dead ends: 18545 [2023-12-22 02:34:38,946 INFO L226 Difference]: Without dead ends: 11735 [2023-12-22 02:34:38,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:38,953 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 216 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:38,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 425 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11735 states. [2023-12-22 02:34:39,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11735 to 11735. [2023-12-22 02:34:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11735 states, 9778 states have (on average 1.2008590713847414) internal successors, (11742), 9958 states have internal predecessors, (11742), 936 states have call successors, (936), 781 states have call predecessors, (936), 1019 states have return successors, (1252), 998 states have call predecessors, (1252), 935 states have call successors, (1252) [2023-12-22 02:34:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11735 states to 11735 states and 13930 transitions. [2023-12-22 02:34:39,906 INFO L78 Accepts]: Start accepts. Automaton has 11735 states and 13930 transitions. Word has length 133 [2023-12-22 02:34:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:39,907 INFO L495 AbstractCegarLoop]: Abstraction has 11735 states and 13930 transitions. [2023-12-22 02:34:39,907 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 11735 states and 13930 transitions. [2023-12-22 02:34:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-22 02:34:39,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:39,913 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] [2023-12-22 02:34:39,917 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 02:34:40,116 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 02:34:40,117 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:40,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1779000811, now seen corresponding path program 1 times [2023-12-22 02:34:40,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:40,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520421464] [2023-12-22 02:34:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:40,120 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 02:34:40,122 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 02:34:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:40,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:34:40,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:40,325 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 02:34:40,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:40,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:40,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520421464] [2023-12-22 02:34:40,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520421464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:40,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:40,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:40,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142597213] [2023-12-22 02:34:40,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:40,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:40,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:40,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:40,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:40,327 INFO L87 Difference]: Start difference. First operand 11735 states and 13930 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:41,742 INFO L93 Difference]: Finished difference Result 24428 states and 28985 transitions. [2023-12-22 02:34:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:41,742 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 135 [2023-12-22 02:34:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:41,774 INFO L225 Difference]: With dead ends: 24428 [2023-12-22 02:34:41,774 INFO L226 Difference]: Without dead ends: 17624 [2023-12-22 02:34:41,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:41,785 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 398 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:41,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 583 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:34:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17624 states. [2023-12-22 02:34:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17624 to 17622. [2023-12-22 02:34:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17622 states, 15030 states have (on average 1.1931470392548238) internal successors, (17933), 15259 states have internal predecessors, (17933), 1255 states have call successors, (1255), 1037 states have call predecessors, (1255), 1335 states have return successors, (1679), 1329 states have call predecessors, (1679), 1254 states have call successors, (1679) [2023-12-22 02:34:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17622 states to 17622 states and 20867 transitions. [2023-12-22 02:34:43,140 INFO L78 Accepts]: Start accepts. Automaton has 17622 states and 20867 transitions. Word has length 135 [2023-12-22 02:34:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:43,140 INFO L495 AbstractCegarLoop]: Abstraction has 17622 states and 20867 transitions. [2023-12-22 02:34:43,141 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 17622 states and 20867 transitions. [2023-12-22 02:34:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-22 02:34:43,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:43,149 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] [2023-12-22 02:34:43,156 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 02:34:43,353 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 02:34:43,354 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:43,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2086308179, now seen corresponding path program 1 times [2023-12-22 02:34:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:43,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70574395] [2023-12-22 02:34:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:43,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:43,356 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 02:34:43,357 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 02:34:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:43,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:43,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:43,441 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 02:34:43,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:43,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70574395] [2023-12-22 02:34:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70574395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:43,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:43,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672256390] [2023-12-22 02:34:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:43,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:43,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:43,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:43,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:43,442 INFO L87 Difference]: Start difference. First operand 17622 states and 20867 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:44,677 INFO L93 Difference]: Finished difference Result 30308 states and 35872 transitions. [2023-12-22 02:34:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:44,678 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 135 [2023-12-22 02:34:44,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:44,707 INFO L225 Difference]: With dead ends: 30308 [2023-12-22 02:34:44,708 INFO L226 Difference]: Without dead ends: 17617 [2023-12-22 02:34:44,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:44,720 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 214 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:44,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 424 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17617 states. [2023-12-22 02:34:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17617 to 17617. [2023-12-22 02:34:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17617 states, 15028 states have (on average 1.1930396593026351) internal successors, (17929), 15256 states have internal predecessors, (17929), 1252 states have call successors, (1252), 1037 states have call predecessors, (1252), 1335 states have return successors, (1676), 1326 states have call predecessors, (1676), 1251 states have call successors, (1676) [2023-12-22 02:34:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17617 states to 17617 states and 20857 transitions. [2023-12-22 02:34:46,208 INFO L78 Accepts]: Start accepts. Automaton has 17617 states and 20857 transitions. Word has length 135 [2023-12-22 02:34:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:46,208 INFO L495 AbstractCegarLoop]: Abstraction has 17617 states and 20857 transitions. [2023-12-22 02:34:46,208 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 17617 states and 20857 transitions. [2023-12-22 02:34:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-22 02:34:46,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:46,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:34:46,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-12-22 02:34:46,419 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 02:34:46,420 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:46,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1908129337, now seen corresponding path program 1 times [2023-12-22 02:34:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19610624] [2023-12-22 02:34:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:46,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:46,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:46,422 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 02:34:46,444 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 02:34:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:46,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:34:46,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-22 02:34:46,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:46,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:46,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19610624] [2023-12-22 02:34:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19610624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:46,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:46,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:46,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891107311] [2023-12-22 02:34:46,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:46,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:34:46,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:34:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:46,532 INFO L87 Difference]: Start difference. First operand 17617 states and 20857 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-22 02:34:48,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:48,460 INFO L93 Difference]: Finished difference Result 24868 states and 29543 transitions. [2023-12-22 02:34:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:34:48,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 145 [2023-12-22 02:34:48,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:48,492 INFO L225 Difference]: With dead ends: 24868 [2023-12-22 02:34:48,492 INFO L226 Difference]: Without dead ends: 19760 [2023-12-22 02:34:48,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 02:34:48,500 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 464 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:48,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 495 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:34:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19760 states. [2023-12-22 02:34:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19760 to 19440. [2023-12-22 02:34:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19440 states, 16362 states have (on average 1.195086175284195) internal successors, (19554), 16626 states have internal predecessors, (19554), 1472 states have call successors, (1472), 1226 states have call predecessors, (1472), 1604 states have return successors, (1970), 1589 states have call predecessors, (1970), 1471 states have call successors, (1970) [2023-12-22 02:34:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19440 states to 19440 states and 22996 transitions. [2023-12-22 02:34:50,386 INFO L78 Accepts]: Start accepts. Automaton has 19440 states and 22996 transitions. Word has length 145 [2023-12-22 02:34:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:50,386 INFO L495 AbstractCegarLoop]: Abstraction has 19440 states and 22996 transitions. [2023-12-22 02:34:50,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-22 02:34:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 19440 states and 22996 transitions. [2023-12-22 02:34:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-22 02:34:50,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:50,395 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] [2023-12-22 02:34:50,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-22 02:34:50,599 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 02:34:50,599 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:50,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash -588145894, now seen corresponding path program 1 times [2023-12-22 02:34:50,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:50,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095877500] [2023-12-22 02:34:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:50,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:50,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:50,602 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 02:34:50,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-22 02:34:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:50,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:34:50,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:50,800 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 02:34:50,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:50,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095877500] [2023-12-22 02:34:50,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095877500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:50,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:50,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:34:50,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936406846] [2023-12-22 02:34:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:50,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:34:50,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:34:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:34:50,801 INFO L87 Difference]: Start difference. First operand 19440 states and 22996 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:53,110 INFO L93 Difference]: Finished difference Result 42888 states and 50717 transitions. [2023-12-22 02:34:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:34:53,111 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 137 [2023-12-22 02:34:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:53,179 INFO L225 Difference]: With dead ends: 42888 [2023-12-22 02:34:53,180 INFO L226 Difference]: Without dead ends: 30202 [2023-12-22 02:34:53,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:34:53,198 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 392 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:53,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 551 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:34:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30202 states. [2023-12-22 02:34:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30202 to 30200. [2023-12-22 02:34:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30200 states, 25927 states have (on average 1.1876036564199484) internal successors, (30791), 26300 states have internal predecessors, (30791), 2059 states have call successors, (2059), 1690 states have call predecessors, (2059), 2212 states have return successors, (2797), 2212 states have call predecessors, (2797), 2058 states have call successors, (2797) [2023-12-22 02:34:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30200 states to 30200 states and 35647 transitions. [2023-12-22 02:34:55,662 INFO L78 Accepts]: Start accepts. Automaton has 30200 states and 35647 transitions. Word has length 137 [2023-12-22 02:34:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:34:55,662 INFO L495 AbstractCegarLoop]: Abstraction has 30200 states and 35647 transitions. [2023-12-22 02:34:55,662 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, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:34:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 30200 states and 35647 transitions. [2023-12-22 02:34:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-22 02:34:55,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:34:55,671 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] [2023-12-22 02:34:55,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-22 02:34:55,875 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 02:34:55,875 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:34:55,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:34:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1022651492, now seen corresponding path program 1 times [2023-12-22 02:34:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:34:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17124896] [2023-12-22 02:34:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:34:55,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:34:55,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:34:55,877 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 02:34:55,906 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 02:34:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:34:55,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:34:55,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:34:55,984 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 02:34:55,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:34:55,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:34:55,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17124896] [2023-12-22 02:34:55,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17124896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:34:55,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:34:55,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:34:55,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980609858] [2023-12-22 02:34:55,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:34:55,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:34:55,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:34:55,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:34:55,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:55,992 INFO L87 Difference]: Start difference. First operand 30200 states and 35647 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:34:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:34:58,172 INFO L93 Difference]: Finished difference Result 53642 states and 63296 transitions. [2023-12-22 02:34:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:34:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2023-12-22 02:34:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:34:58,230 INFO L225 Difference]: With dead ends: 53642 [2023-12-22 02:34:58,230 INFO L226 Difference]: Without dead ends: 30196 [2023-12-22 02:34:58,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:34:58,250 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 212 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:34:58,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 423 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:34:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30196 states. [2023-12-22 02:35:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30196 to 30196. [2023-12-22 02:35:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30196 states, 25926 states have (on average 1.1875723212219393) internal successors, (30789), 26298 states have internal predecessors, (30789), 2056 states have call successors, (2056), 1690 states have call predecessors, (2056), 2212 states have return successors, (2794), 2209 states have call predecessors, (2794), 2055 states have call successors, (2794) [2023-12-22 02:35:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30196 states to 30196 states and 35639 transitions. [2023-12-22 02:35:00,809 INFO L78 Accepts]: Start accepts. Automaton has 30196 states and 35639 transitions. Word has length 137 [2023-12-22 02:35:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:00,810 INFO L495 AbstractCegarLoop]: Abstraction has 30196 states and 35639 transitions. [2023-12-22 02:35:00,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:35:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 30196 states and 35639 transitions. [2023-12-22 02:35:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-22 02:35:00,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:00,818 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] [2023-12-22 02:35:00,825 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 02:35:01,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:01,023 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:01,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash 895387093, now seen corresponding path program 1 times [2023-12-22 02:35:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106561075] [2023-12-22 02:35:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:01,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:01,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:01,026 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:01,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 02:35:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:01,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:01,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:01,147 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 02:35:01,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:01,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106561075] [2023-12-22 02:35:01,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106561075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:01,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:01,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:01,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884666142] [2023-12-22 02:35:01,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:01,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:01,149 INFO L87 Difference]: Start difference. First operand 30196 states and 35639 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:05,060 INFO L93 Difference]: Finished difference Result 72350 states and 85683 transitions. [2023-12-22 02:35:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:05,060 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 139 [2023-12-22 02:35:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:05,129 INFO L225 Difference]: With dead ends: 72350 [2023-12-22 02:35:05,129 INFO L226 Difference]: Without dead ends: 39664 [2023-12-22 02:35:05,154 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 02:35:05,155 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 176 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:05,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 789 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39664 states. [2023-12-22 02:35:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39664 to 39664. [2023-12-22 02:35:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39664 states, 34354 states have (on average 1.1839669325260522) internal successors, (40674), 34782 states have internal predecessors, (40674), 2592 states have call successors, (2592), 2106 states have call predecessors, (2592), 2716 states have return successors, (3556), 2777 states have call predecessors, (3556), 2591 states have call successors, (3556) [2023-12-22 02:35:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39664 states to 39664 states and 46822 transitions. [2023-12-22 02:35:08,545 INFO L78 Accepts]: Start accepts. Automaton has 39664 states and 46822 transitions. Word has length 139 [2023-12-22 02:35:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:08,545 INFO L495 AbstractCegarLoop]: Abstraction has 39664 states and 46822 transitions. [2023-12-22 02:35:08,545 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:35:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 39664 states and 46822 transitions. [2023-12-22 02:35:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-22 02:35:08,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:08,560 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] [2023-12-22 02:35:08,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-12-22 02:35:08,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:08,766 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:08,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash 197274665, now seen corresponding path program 1 times [2023-12-22 02:35:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:08,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834343587] [2023-12-22 02:35:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:08,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:08,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:08,770 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:08,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-22 02:35:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:08,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:08,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:08,999 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 02:35:09,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:09,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:09,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834343587] [2023-12-22 02:35:09,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834343587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:09,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:35:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349408751] [2023-12-22 02:35:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:09,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:09,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:09,002 INFO L87 Difference]: Start difference. First operand 39664 states and 46822 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-22 02:35:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:13,424 INFO L93 Difference]: Finished difference Result 82007 states and 97006 transitions. [2023-12-22 02:35:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:13,425 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 175 [2023-12-22 02:35:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:13,586 INFO L225 Difference]: With dead ends: 82007 [2023-12-22 02:35:13,586 INFO L226 Difference]: Without dead ends: 49096 [2023-12-22 02:35:13,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:13,625 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 220 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:13,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 493 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49096 states. [2023-12-22 02:35:17,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49096 to 49024. [2023-12-22 02:35:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49024 states, 42682 states have (on average 1.1760929665901316) internal successors, (50198), 43162 states have internal predecessors, (50198), 3128 states have call successors, (3128), 2522 states have call predecessors, (3128), 3212 states have return successors, (4256), 3341 states have call predecessors, (4256), 3127 states have call successors, (4256) [2023-12-22 02:35:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49024 states to 49024 states and 57582 transitions. [2023-12-22 02:35:17,568 INFO L78 Accepts]: Start accepts. Automaton has 49024 states and 57582 transitions. Word has length 175 [2023-12-22 02:35:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:17,568 INFO L495 AbstractCegarLoop]: Abstraction has 49024 states and 57582 transitions. [2023-12-22 02:35:17,568 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-22 02:35:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 49024 states and 57582 transitions. [2023-12-22 02:35:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-22 02:35:17,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:17,596 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] [2023-12-22 02:35:17,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:17,801 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 02:35:17,801 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:17,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1642546372, now seen corresponding path program 1 times [2023-12-22 02:35:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:17,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564221332] [2023-12-22 02:35:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:17,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:17,803 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 02:35:17,831 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 02:35:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:17,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:17,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:17,981 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 02:35:17,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:17,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:17,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564221332] [2023-12-22 02:35:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564221332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:17,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:17,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:35:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489662669] [2023-12-22 02:35:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:17,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:35:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:35:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:35:17,985 INFO L87 Difference]: Start difference. First operand 49024 states and 57582 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, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-22 02:35:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:22,356 INFO L93 Difference]: Finished difference Result 91768 states and 107975 transitions. [2023-12-22 02:35:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:35:22,357 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, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 199 [2023-12-22 02:35:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:22,471 INFO L225 Difference]: With dead ends: 91768 [2023-12-22 02:35:22,472 INFO L226 Difference]: Without dead ends: 49498 [2023-12-22 02:35:22,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:22,519 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 417 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:22,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 489 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:35:22,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49498 states. [2023-12-22 02:35:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49498 to 49498. [2023-12-22 02:35:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49498 states, 43108 states have (on average 1.169110141969008) internal successors, (50398), 43612 states have internal predecessors, (50398), 3128 states have call successors, (3128), 2522 states have call predecessors, (3128), 3260 states have return successors, (4034), 3365 states have call predecessors, (4034), 3127 states have call successors, (4034) [2023-12-22 02:35:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49498 states to 49498 states and 57560 transitions. [2023-12-22 02:35:26,522 INFO L78 Accepts]: Start accepts. Automaton has 49498 states and 57560 transitions. Word has length 199 [2023-12-22 02:35:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:26,523 INFO L495 AbstractCegarLoop]: Abstraction has 49498 states and 57560 transitions. [2023-12-22 02:35:26,523 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, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-22 02:35:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 49498 states and 57560 transitions. [2023-12-22 02:35:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-22 02:35:26,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:26,565 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] [2023-12-22 02:35:26,574 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 02:35:26,770 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 02:35:26,770 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:26,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash 931610133, now seen corresponding path program 1 times [2023-12-22 02:35:26,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:26,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291543221] [2023-12-22 02:35:26,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:26,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:26,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:26,772 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 02:35:26,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-22 02:35:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:26,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:26,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:26,904 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 02:35:26,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:26,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291543221] [2023-12-22 02:35:26,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291543221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:26,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:26,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:26,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184797426] [2023-12-22 02:35:26,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:26,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:26,909 INFO L87 Difference]: Start difference. First operand 49498 states and 57560 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-22 02:35:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:30,850 INFO L93 Difference]: Finished difference Result 82922 states and 96514 transitions. [2023-12-22 02:35:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:30,850 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 200 [2023-12-22 02:35:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:30,983 INFO L225 Difference]: With dead ends: 82922 [2023-12-22 02:35:30,983 INFO L226 Difference]: Without dead ends: 49500 [2023-12-22 02:35:31,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:31,025 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 168 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:31,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 778 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49500 states. [2023-12-22 02:35:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49500 to 49498. [2023-12-22 02:35:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49498 states, 43108 states have (on average 1.1673935232439454) internal successors, (50324), 43612 states have internal predecessors, (50324), 3128 states have call successors, (3128), 2522 states have call predecessors, (3128), 3260 states have return successors, (4028), 3365 states have call predecessors, (4028), 3127 states have call successors, (4028) [2023-12-22 02:35:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49498 states to 49498 states and 57480 transitions. [2023-12-22 02:35:35,088 INFO L78 Accepts]: Start accepts. Automaton has 49498 states and 57480 transitions. Word has length 200 [2023-12-22 02:35:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:35,089 INFO L495 AbstractCegarLoop]: Abstraction has 49498 states and 57480 transitions. [2023-12-22 02:35:35,089 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-22 02:35:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 49498 states and 57480 transitions. [2023-12-22 02:35:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-22 02:35:35,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:35,106 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:35,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-12-22 02:35:35,312 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 02:35:35,312 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:35,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:35,313 INFO L85 PathProgramCache]: Analyzing trace with hash -240273650, now seen corresponding path program 1 times [2023-12-22 02:35:35,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:35,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503762522] [2023-12-22 02:35:35,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:35,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:35,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:35,315 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 02:35:35,317 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 02:35:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:35,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:35:35,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-22 02:35:35,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:35,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:35,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503762522] [2023-12-22 02:35:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503762522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:35,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:35,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-22 02:35:35,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154867313] [2023-12-22 02:35:35,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:35,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:35:35,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:35,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:35:35,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:35,445 INFO L87 Difference]: Start difference. First operand 49498 states and 57480 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-22 02:35:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:38,665 INFO L93 Difference]: Finished difference Result 53330 states and 62149 transitions. [2023-12-22 02:35:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:35:38,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 217 [2023-12-22 02:35:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:38,765 INFO L225 Difference]: With dead ends: 53330 [2023-12-22 02:35:38,766 INFO L226 Difference]: Without dead ends: 46597 [2023-12-22 02:35:38,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-22 02:35:38,787 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 32 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:38,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1529 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:35:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46597 states. [2023-12-22 02:35:42,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46597 to 45705. [2023-12-22 02:35:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45705 states, 40403 states have (on average 1.1638492191173924) internal successors, (47023), 40783 states have internal predecessors, (47023), 2633 states have call successors, (2633), 2083 states have call predecessors, (2633), 2667 states have return successors, (3349), 2839 states have call predecessors, (3349), 2632 states have call successors, (3349) [2023-12-22 02:35:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45705 states to 45705 states and 53005 transitions. [2023-12-22 02:35:42,153 INFO L78 Accepts]: Start accepts. Automaton has 45705 states and 53005 transitions. Word has length 217 [2023-12-22 02:35:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:42,153 INFO L495 AbstractCegarLoop]: Abstraction has 45705 states and 53005 transitions. [2023-12-22 02:35:42,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-22 02:35:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 45705 states and 53005 transitions. [2023-12-22 02:35:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-22 02:35:42,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:42,176 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:42,183 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 02:35:42,380 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 02:35:42,381 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:42,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash -538751720, now seen corresponding path program 1 times [2023-12-22 02:35:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:42,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655460398] [2023-12-22 02:35:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:42,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:42,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:42,384 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 02:35:42,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-22 02:35:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:42,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:35:42,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-22 02:35:42,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:42,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655460398] [2023-12-22 02:35:42,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655460398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-22 02:35:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845364242] [2023-12-22 02:35:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:42,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:35:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:35:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:35:42,555 INFO L87 Difference]: Start difference. First operand 45705 states and 53005 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-22 02:35:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:45,882 INFO L93 Difference]: Finished difference Result 48762 states and 56641 transitions. [2023-12-22 02:35:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:35:45,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 229 [2023-12-22 02:35:45,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:45,996 INFO L225 Difference]: With dead ends: 48762 [2023-12-22 02:35:45,997 INFO L226 Difference]: Without dead ends: 45901 [2023-12-22 02:35:46,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:35:46,013 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 346 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:46,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 402 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:35:46,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45901 states. [2023-12-22 02:35:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45901 to 45717. [2023-12-22 02:35:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45717 states, 40411 states have (on average 1.163841528296751) internal successors, (47032), 40791 states have internal predecessors, (47032), 2635 states have call successors, (2635), 2085 states have call predecessors, (2635), 2669 states have return successors, (3353), 2841 states have call predecessors, (3353), 2634 states have call successors, (3353) [2023-12-22 02:35:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45717 states to 45717 states and 53020 transitions. [2023-12-22 02:35:49,318 INFO L78 Accepts]: Start accepts. Automaton has 45717 states and 53020 transitions. Word has length 229 [2023-12-22 02:35:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:35:49,318 INFO L495 AbstractCegarLoop]: Abstraction has 45717 states and 53020 transitions. [2023-12-22 02:35:49,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-22 02:35:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 45717 states and 53020 transitions. [2023-12-22 02:35:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-22 02:35:49,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:35:49,343 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:35:49,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-12-22 02:35:49,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:49,548 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:35:49,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:35:49,548 INFO L85 PathProgramCache]: Analyzing trace with hash -382771178, now seen corresponding path program 1 times [2023-12-22 02:35:49,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:35:49,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352494425] [2023-12-22 02:35:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:35:49,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:35:49,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:35:49,550 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:35:49,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-12-22 02:35:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:35:49,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:35:49,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:35:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-22 02:35:49,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:35:49,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:35:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352494425] [2023-12-22 02:35:49,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352494425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:35:49,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:35:49,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:35:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423959199] [2023-12-22 02:35:49,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:35:49,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:35:49,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:35:49,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:35:49,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:49,795 INFO L87 Difference]: Start difference. First operand 45717 states and 53020 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-22 02:35:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:35:53,312 INFO L93 Difference]: Finished difference Result 50511 states and 58833 transitions. [2023-12-22 02:35:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:35:53,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 229 [2023-12-22 02:35:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:35:53,406 INFO L225 Difference]: With dead ends: 50511 [2023-12-22 02:35:53,406 INFO L226 Difference]: Without dead ends: 45784 [2023-12-22 02:35:53,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:35:53,426 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 258 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:35:53,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 428 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:35:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45784 states.