/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.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 08:09:23,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 08:09:24,075 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 08:09:24,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 08:09:24,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 08:09:24,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 08:09:24,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 08:09:24,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 08:09:24,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 08:09:24,113 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 08:09:24,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 08:09:24,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 08:09:24,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 08:09:24,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 08:09:24,116 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 08:09:24,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 08:09:24,117 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 08:09:24,117 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 08:09:24,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 08:09:24,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 08:09:24,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 08:09:24,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 08:09:24,118 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 08:09:24,118 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 08:09:24,119 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 08:09:24,119 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 08:09:24,119 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 08:09:24,119 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 08:09:24,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 08:09:24,120 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 08:09:24,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 08:09:24,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 08:09:24,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 08:09:24,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 08:09:24,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 08:09:24,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 08:09:24,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 08:09:24,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 08:09:24,122 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 08:09:24,122 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 08:09:24,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 08:09:24,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 08:09:24,123 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 08:09:24,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 08:09:24,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 08:09:24,124 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 08:09:24,124 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 08:09:24,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 08:09:24,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 08:09:24,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 08:09:24,387 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 08:09:24,388 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 08:09:24,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c [2023-12-16 08:09:25,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 08:09:26,116 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 08:09:26,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-1.c [2023-12-16 08:09:26,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf407d3f5/8c5dd5fa8c5642559f23c47da80e07a3/FLAG581293415 [2023-12-16 08:09:26,158 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf407d3f5/8c5dd5fa8c5642559f23c47da80e07a3 [2023-12-16 08:09:26,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 08:09:26,161 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 08:09:26,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 08:09:26,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 08:09:26,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 08:09:26,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404171fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26, skipping insertion in model container [2023-12-16 08:09:26,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 08:09:26,431 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.01.cil-1.c[914,927] [2023-12-16 08:09:26,482 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.01.cil-1.c[7115,7128] [2023-12-16 08:09:26,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 08:09:26,524 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 08:09:26,535 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.01.cil-1.c[914,927] [2023-12-16 08:09:26,553 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.01.cil-1.c[7115,7128] [2023-12-16 08:09:26,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 08:09:26,590 INFO L206 MainTranslator]: Completed translation [2023-12-16 08:09:26,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26 WrapperNode [2023-12-16 08:09:26,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 08:09:26,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 08:09:26,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 08:09:26,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 08:09:26,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,652 INFO L138 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 391 [2023-12-16 08:09:26,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 08:09:26,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 08:09:26,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 08:09:26,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 08:09:26,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,711 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 08:09:26,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 08:09:26,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 08:09:26,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 08:09:26,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 08:09:26,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (1/1) ... [2023-12-16 08:09:26,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 08:09:26,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 08:09:26,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 08:09:26,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 08:09:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 08:09:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 08:09:26,847 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 08:09:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-16 08:09:26,847 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-16 08:09:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 08:09:26,847 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 08:09:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 08:09:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 08:09:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-16 08:09:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-16 08:09:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 08:09:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 08:09:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 08:09:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 08:09:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-16 08:09:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-16 08:09:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 08:09:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-16 08:09:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-16 08:09:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-16 08:09:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-16 08:09:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 08:09:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 08:09:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 08:09:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 08:09:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-16 08:09:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-16 08:09:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 08:09:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 08:09:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 08:09:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 08:09:26,942 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 08:09:26,944 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 08:09:27,462 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 08:09:27,501 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 08:09:27,501 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-16 08:09:27,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:09:27 BoogieIcfgContainer [2023-12-16 08:09:27,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 08:09:27,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 08:09:27,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 08:09:27,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 08:09:27,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:09:26" (1/3) ... [2023-12-16 08:09:27,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a1b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:09:27, skipping insertion in model container [2023-12-16 08:09:27,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:09:26" (2/3) ... [2023-12-16 08:09:27,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a1b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:09:27, skipping insertion in model container [2023-12-16 08:09:27,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:09:27" (3/3) ... [2023-12-16 08:09:27,509 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.01.cil-1.c [2023-12-16 08:09:27,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 08:09:27,525 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 08:09:27,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 08:09:27,574 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;@31db4061, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 08:09:27,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 08:09:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 140 states have (on average 1.6142857142857143) internal successors, (226), 146 states have internal predecessors, (226), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-16 08:09:27,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:27,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:27,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:27,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:27,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash -601353219, now seen corresponding path program 1 times [2023-12-16 08:09:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927325224] [2023-12-16 08:09:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:27,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:27,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:27,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:27,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 08:09:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:27,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:27,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:27,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:27,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927325224] [2023-12-16 08:09:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927325224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:27,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:27,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917562774] [2023-12-16 08:09:27,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:27,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:27,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:27,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:27,889 INFO L87 Difference]: Start difference. First operand has 186 states, 140 states have (on average 1.6142857142857143) internal successors, (226), 146 states have internal predecessors, (226), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 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) [2023-12-16 08:09:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:28,423 INFO L93 Difference]: Finished difference Result 449 states and 688 transitions. [2023-12-16 08:09:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:09:28,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:28,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:28,436 INFO L225 Difference]: With dead ends: 449 [2023-12-16 08:09:28,436 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 08:09:28,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:28,443 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 364 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:28,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 474 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 08:09:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2023-12-16 08:09:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 204 states have (on average 1.4803921568627452) internal successors, (302), 209 states have internal predecessors, (302), 39 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-12-16 08:09:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 379 transitions. [2023-12-16 08:09:28,527 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 379 transitions. Word has length 51 [2023-12-16 08:09:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:28,527 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 379 transitions. [2023-12-16 08:09:28,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 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) [2023-12-16 08:09:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 379 transitions. [2023-12-16 08:09:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:28,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:28,535 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] [2023-12-16 08:09:28,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:28,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:28,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:28,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 244995329, now seen corresponding path program 1 times [2023-12-16 08:09:28,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457780931] [2023-12-16 08:09:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:28,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:28,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:28,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:28,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 08:09:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:28,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:28,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:28,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:28,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457780931] [2023-12-16 08:09:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457780931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139758315] [2023-12-16 08:09:28,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:28,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:28,869 INFO L87 Difference]: Start difference. First operand 265 states and 379 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:29,229 INFO L93 Difference]: Finished difference Result 435 states and 630 transitions. [2023-12-16 08:09:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:29,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:29,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:29,232 INFO L225 Difference]: With dead ends: 435 [2023-12-16 08:09:29,232 INFO L226 Difference]: Without dead ends: 265 [2023-12-16 08:09:29,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:29,235 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 307 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:29,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 345 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-16 08:09:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-16 08:09:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 204 states have (on average 1.446078431372549) internal successors, (295), 209 states have internal predecessors, (295), 39 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-12-16 08:09:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 372 transitions. [2023-12-16 08:09:29,262 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 372 transitions. Word has length 51 [2023-12-16 08:09:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:29,263 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 372 transitions. [2023-12-16 08:09:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 372 transitions. [2023-12-16 08:09:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:29,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:29,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:29,271 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 [2023-12-16 08:09:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:29,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:29,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1944460419, now seen corresponding path program 1 times [2023-12-16 08:09:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:29,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73563697] [2023-12-16 08:09:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:29,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:29,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:29,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:29,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 08:09:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:29,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:29,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:29,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:29,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73563697] [2023-12-16 08:09:29,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73563697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:29,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:29,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:29,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935041070] [2023-12-16 08:09:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:29,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:29,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:29,631 INFO L87 Difference]: Start difference. First operand 265 states and 372 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:30,064 INFO L93 Difference]: Finished difference Result 469 states and 668 transitions. [2023-12-16 08:09:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:30,067 INFO L225 Difference]: With dead ends: 469 [2023-12-16 08:09:30,067 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 08:09:30,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:30,071 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 316 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:30,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 339 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 08:09:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-16 08:09:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 232 states have (on average 1.4051724137931034) internal successors, (326), 237 states have internal predecessors, (326), 41 states have call successors, (41), 24 states have call predecessors, (41), 24 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-16 08:09:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2023-12-16 08:09:30,125 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 51 [2023-12-16 08:09:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:30,125 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2023-12-16 08:09:30,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2023-12-16 08:09:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:30,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:30,128 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] [2023-12-16 08:09:30,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:30,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:30,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:30,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1183804031, now seen corresponding path program 1 times [2023-12-16 08:09:30,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:30,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347291840] [2023-12-16 08:09:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:30,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:30,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:30,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:30,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 08:09:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:30,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:30,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:30,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:30,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347291840] [2023-12-16 08:09:30,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347291840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:30,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:30,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:30,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346880727] [2023-12-16 08:09:30,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:30,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:30,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:30,482 INFO L87 Difference]: Start difference. First operand 299 states and 407 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:30,598 INFO L93 Difference]: Finished difference Result 522 states and 717 transitions. [2023-12-16 08:09:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:30,601 INFO L225 Difference]: With dead ends: 522 [2023-12-16 08:09:30,601 INFO L226 Difference]: Without dead ends: 319 [2023-12-16 08:09:30,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:30,605 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 11 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:30,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 694 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-16 08:09:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 303. [2023-12-16 08:09:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 236 states have (on average 1.3898305084745763) internal successors, (328), 241 states have internal predecessors, (328), 41 states have call successors, (41), 24 states have call predecessors, (41), 24 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-16 08:09:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2023-12-16 08:09:30,639 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 51 [2023-12-16 08:09:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:30,641 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2023-12-16 08:09:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2023-12-16 08:09:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:30,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:30,644 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] [2023-12-16 08:09:30,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:30,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:30,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:30,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1161171777, now seen corresponding path program 1 times [2023-12-16 08:09:30,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250783299] [2023-12-16 08:09:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:30,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:30,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:30,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:30,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 08:09:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:30,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:30,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:31,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:31,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:31,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250783299] [2023-12-16 08:09:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250783299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:31,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:31,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 08:09:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889851596] [2023-12-16 08:09:31,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:31,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:31,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:31,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:31,007 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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) [2023-12-16 08:09:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:31,089 INFO L93 Difference]: Finished difference Result 668 states and 895 transitions. [2023-12-16 08:09:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:31,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:31,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:31,094 INFO L225 Difference]: With dead ends: 668 [2023-12-16 08:09:31,094 INFO L226 Difference]: Without dead ends: 461 [2023-12-16 08:09:31,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:31,095 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 217 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:31,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 368 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-16 08:09:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 457. [2023-12-16 08:09:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 358 states have (on average 1.3631284916201116) internal successors, (488), 364 states have internal predecessors, (488), 60 states have call successors, (60), 36 states have call predecessors, (60), 37 states have return successors, (60), 58 states have call predecessors, (60), 58 states have call successors, (60) [2023-12-16 08:09:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 608 transitions. [2023-12-16 08:09:31,142 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 608 transitions. Word has length 51 [2023-12-16 08:09:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:31,142 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 608 transitions. [2023-12-16 08:09:31,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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) [2023-12-16 08:09:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 608 transitions. [2023-12-16 08:09:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:31,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:31,145 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] [2023-12-16 08:09:31,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:31,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:31,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:31,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:31,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1469610786, now seen corresponding path program 1 times [2023-12-16 08:09:31,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:31,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28084543] [2023-12-16 08:09:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:31,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:31,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 08:09:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:31,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:31,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:31,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:31,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:31,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28084543] [2023-12-16 08:09:31,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28084543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:31,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:31,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:31,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796283678] [2023-12-16 08:09:31,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:31,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:31,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:31,510 INFO L87 Difference]: Start difference. First operand 457 states and 608 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:31,623 INFO L93 Difference]: Finished difference Result 834 states and 1121 transitions. [2023-12-16 08:09:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:31,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:31,626 INFO L225 Difference]: With dead ends: 834 [2023-12-16 08:09:31,626 INFO L226 Difference]: Without dead ends: 473 [2023-12-16 08:09:31,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:31,628 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 2 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:31,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 703 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-16 08:09:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 465. [2023-12-16 08:09:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 366 states have (on average 1.349726775956284) internal successors, (494), 372 states have internal predecessors, (494), 60 states have call successors, (60), 36 states have call predecessors, (60), 37 states have return successors, (60), 58 states have call predecessors, (60), 58 states have call successors, (60) [2023-12-16 08:09:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 614 transitions. [2023-12-16 08:09:31,665 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 614 transitions. Word has length 51 [2023-12-16 08:09:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:31,666 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 614 transitions. [2023-12-16 08:09:31,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 614 transitions. [2023-12-16 08:09:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:31,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:31,667 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] [2023-12-16 08:09:31,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:31,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:31,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1329062176, now seen corresponding path program 1 times [2023-12-16 08:09:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:31,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75037014] [2023-12-16 08:09:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:31,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:31,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:31,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:31,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 08:09:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:31,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 08:09:31,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:31,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:31,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75037014] [2023-12-16 08:09:31,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75037014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:31,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:31,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:31,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138758548] [2023-12-16 08:09:31,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:31,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:31,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:32,000 INFO L87 Difference]: Start difference. First operand 465 states and 614 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:32,347 INFO L93 Difference]: Finished difference Result 893 states and 1172 transitions. [2023-12-16 08:09:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:09:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:32,350 INFO L225 Difference]: With dead ends: 893 [2023-12-16 08:09:32,351 INFO L226 Difference]: Without dead ends: 523 [2023-12-16 08:09:32,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:09:32,352 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 292 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:32,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 333 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:32,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-16 08:09:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 515. [2023-12-16 08:09:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 412 states have (on average 1.2815533980582525) internal successors, (528), 418 states have internal predecessors, (528), 60 states have call successors, (60), 40 states have call predecessors, (60), 41 states have return successors, (60), 58 states have call predecessors, (60), 58 states have call successors, (60) [2023-12-16 08:09:32,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 648 transitions. [2023-12-16 08:09:32,391 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 648 transitions. Word has length 51 [2023-12-16 08:09:32,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:32,391 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 648 transitions. [2023-12-16 08:09:32,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-16 08:09:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 648 transitions. [2023-12-16 08:09:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 08:09:32,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:32,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:32,399 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 [2023-12-16 08:09:32,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:32,596 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:32,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 971760414, now seen corresponding path program 1 times [2023-12-16 08:09:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080767858] [2023-12-16 08:09:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:32,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:32,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:32,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:32,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 08:09:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:32,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:32,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:32,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:32,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080767858] [2023-12-16 08:09:32,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080767858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:32,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:32,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 08:09:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634669806] [2023-12-16 08:09:32,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:32,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:32,752 INFO L87 Difference]: Start difference. First operand 515 states and 648 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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) [2023-12-16 08:09:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:33,019 INFO L93 Difference]: Finished difference Result 1324 states and 1648 transitions. [2023-12-16 08:09:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:33,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 51 [2023-12-16 08:09:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:33,024 INFO L225 Difference]: With dead ends: 1324 [2023-12-16 08:09:33,024 INFO L226 Difference]: Without dead ends: 905 [2023-12-16 08:09:33,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:33,027 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 191 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:33,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 324 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 08:09:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-16 08:09:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 901. [2023-12-16 08:09:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 722 states have (on average 1.2382271468144044) internal successors, (894), 734 states have internal predecessors, (894), 102 states have call successors, (102), 72 states have call predecessors, (102), 75 states have return successors, (104), 96 states have call predecessors, (104), 100 states have call successors, (104) [2023-12-16 08:09:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1100 transitions. [2023-12-16 08:09:33,093 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1100 transitions. Word has length 51 [2023-12-16 08:09:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:33,093 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1100 transitions. [2023-12-16 08:09:33,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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) [2023-12-16 08:09:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1100 transitions. [2023-12-16 08:09:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:09:33,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:33,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:33,108 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 [2023-12-16 08:09:33,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:33,298 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:33,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1674297862, now seen corresponding path program 1 times [2023-12-16 08:09:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:33,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107578990] [2023-12-16 08:09:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:33,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:33,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:33,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:33,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 08:09:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:33,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 08:09:33,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:33,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:33,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:33,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107578990] [2023-12-16 08:09:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107578990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:33,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:33,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 08:09:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052657956] [2023-12-16 08:09:33,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:33,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:33,458 INFO L87 Difference]: Start difference. First operand 901 states and 1100 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:33,889 INFO L93 Difference]: Finished difference Result 1077 states and 1354 transitions. [2023-12-16 08:09:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:09:33,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-16 08:09:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:33,895 INFO L225 Difference]: With dead ends: 1077 [2023-12-16 08:09:33,895 INFO L226 Difference]: Without dead ends: 996 [2023-12-16 08:09:33,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:33,896 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 231 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:33,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 526 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-12-16 08:09:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 989. [2023-12-16 08:09:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 790 states have (on average 1.2544303797468355) internal successors, (991), 804 states have internal predecessors, (991), 113 states have call successors, (113), 79 states have call predecessors, (113), 84 states have return successors, (120), 108 states have call predecessors, (120), 111 states have call successors, (120) [2023-12-16 08:09:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1224 transitions. [2023-12-16 08:09:33,986 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1224 transitions. Word has length 58 [2023-12-16 08:09:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:33,986 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1224 transitions. [2023-12-16 08:09:33,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1224 transitions. [2023-12-16 08:09:33,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:09:33,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:33,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:33,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:34,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:34,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:34,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1529507387, now seen corresponding path program 1 times [2023-12-16 08:09:34,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:34,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207860988] [2023-12-16 08:09:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:34,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:34,194 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:34,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 08:09:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:34,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 08:09:34,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:34,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:34,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:34,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207860988] [2023-12-16 08:09:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207860988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:34,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:34,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 08:09:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560357497] [2023-12-16 08:09:34,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:34,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:34,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:34,306 INFO L87 Difference]: Start difference. First operand 989 states and 1224 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:34,729 INFO L93 Difference]: Finished difference Result 1348 states and 1745 transitions. [2023-12-16 08:09:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:09:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-16 08:09:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:34,735 INFO L225 Difference]: With dead ends: 1348 [2023-12-16 08:09:34,735 INFO L226 Difference]: Without dead ends: 1184 [2023-12-16 08:09:34,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:34,736 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 223 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:34,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 530 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2023-12-16 08:09:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1176. [2023-12-16 08:09:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 933 states have (on average 1.2743837084673098) internal successors, (1189), 955 states have internal predecessors, (1189), 135 states have call successors, (135), 93 states have call predecessors, (135), 106 states have return successors, (162), 132 states have call predecessors, (162), 133 states have call successors, (162) [2023-12-16 08:09:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1486 transitions. [2023-12-16 08:09:34,833 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1486 transitions. Word has length 58 [2023-12-16 08:09:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:34,833 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1486 transitions. [2023-12-16 08:09:34,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1486 transitions. [2023-12-16 08:09:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:09:34,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:34,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:34,842 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 [2023-12-16 08:09:35,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:35,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:35,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2109010940, now seen corresponding path program 1 times [2023-12-16 08:09:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:35,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636458980] [2023-12-16 08:09:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:35,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:35,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:35,042 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:35,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 08:09:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:35,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:09:35,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:35,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:35,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636458980] [2023-12-16 08:09:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636458980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:35,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:35,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 08:09:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136466718] [2023-12-16 08:09:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 08:09:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:35,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 08:09:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:35,232 INFO L87 Difference]: Start difference. First operand 1176 states and 1486 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:35,472 INFO L93 Difference]: Finished difference Result 1531 states and 1983 transitions. [2023-12-16 08:09:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:09:35,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-16 08:09:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:35,483 INFO L225 Difference]: With dead ends: 1531 [2023-12-16 08:09:35,483 INFO L226 Difference]: Without dead ends: 1194 [2023-12-16 08:09:35,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:09:35,492 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 6 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:35,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1140 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2023-12-16 08:09:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1184. [2023-12-16 08:09:35,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 939 states have (on average 1.2705005324813632) internal successors, (1193), 961 states have internal predecessors, (1193), 135 states have call successors, (135), 93 states have call predecessors, (135), 108 states have return successors, (164), 134 states have call predecessors, (164), 133 states have call successors, (164) [2023-12-16 08:09:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1492 transitions. [2023-12-16 08:09:35,683 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1492 transitions. Word has length 58 [2023-12-16 08:09:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:35,684 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1492 transitions. [2023-12-16 08:09:35,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1492 transitions. [2023-12-16 08:09:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:09:35,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:35,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:35,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:35,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:35,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:35,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash -134972358, now seen corresponding path program 1 times [2023-12-16 08:09:35,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:35,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882932661] [2023-12-16 08:09:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:35,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:35,893 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:35,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 08:09:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:35,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:09:35,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:35,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:35,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882932661] [2023-12-16 08:09:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882932661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 08:09:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54029853] [2023-12-16 08:09:35,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:35,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 08:09:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 08:09:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:35,996 INFO L87 Difference]: Start difference. First operand 1184 states and 1492 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:36,132 INFO L93 Difference]: Finished difference Result 1541 states and 1985 transitions. [2023-12-16 08:09:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:09:36,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-16 08:09:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:36,138 INFO L225 Difference]: With dead ends: 1541 [2023-12-16 08:09:36,138 INFO L226 Difference]: Without dead ends: 1196 [2023-12-16 08:09:36,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:09:36,140 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 3 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:36,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1145 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-12-16 08:09:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1192. [2023-12-16 08:09:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 945 states have (on average 1.2666666666666666) internal successors, (1197), 967 states have internal predecessors, (1197), 135 states have call successors, (135), 93 states have call predecessors, (135), 110 states have return successors, (166), 136 states have call predecessors, (166), 133 states have call successors, (166) [2023-12-16 08:09:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1498 transitions. [2023-12-16 08:09:36,259 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1498 transitions. Word has length 58 [2023-12-16 08:09:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:36,259 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1498 transitions. [2023-12-16 08:09:36,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1498 transitions. [2023-12-16 08:09:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 08:09:36,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:36,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:36,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:36,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:36,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:36,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash -72932744, now seen corresponding path program 1 times [2023-12-16 08:09:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810297682] [2023-12-16 08:09:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:36,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:36,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:36,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 08:09:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:36,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:36,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:36,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:36,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:36,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810297682] [2023-12-16 08:09:36,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810297682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:36,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:36,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:36,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361908047] [2023-12-16 08:09:36,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:36,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:36,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:36,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:36,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:36,614 INFO L87 Difference]: Start difference. First operand 1192 states and 1498 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 08:09:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:37,026 INFO L93 Difference]: Finished difference Result 1890 states and 2445 transitions. [2023-12-16 08:09:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:37,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-16 08:09:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:37,033 INFO L225 Difference]: With dead ends: 1890 [2023-12-16 08:09:37,033 INFO L226 Difference]: Without dead ends: 1541 [2023-12-16 08:09:37,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:37,035 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 306 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:37,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 295 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-16 08:09:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1537. [2023-12-16 08:09:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1200 states have (on average 1.2766666666666666) internal successors, (1532), 1237 states have internal predecessors, (1532), 181 states have call successors, (181), 121 states have call predecessors, (181), 154 states have return successors, (251), 187 states have call predecessors, (251), 179 states have call successors, (251) [2023-12-16 08:09:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 1964 transitions. [2023-12-16 08:09:37,158 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 1964 transitions. Word has length 58 [2023-12-16 08:09:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:37,159 INFO L495 AbstractCegarLoop]: Abstraction has 1537 states and 1964 transitions. [2023-12-16 08:09:37,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 08:09:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 1964 transitions. [2023-12-16 08:09:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 08:09:37,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:37,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:37,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:37,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:37,373 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:37,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:37,374 INFO L85 PathProgramCache]: Analyzing trace with hash 365280673, now seen corresponding path program 1 times [2023-12-16 08:09:37,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:37,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764710743] [2023-12-16 08:09:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:37,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:37,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:37,390 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:37,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 08:09:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:37,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:37,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:37,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:37,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764710743] [2023-12-16 08:09:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764710743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:37,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:37,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:37,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713732606] [2023-12-16 08:09:37,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:37,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:37,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:37,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:37,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:37,564 INFO L87 Difference]: Start difference. First operand 1537 states and 1964 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:37,752 INFO L93 Difference]: Finished difference Result 2851 states and 3735 transitions. [2023-12-16 08:09:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2023-12-16 08:09:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:37,761 INFO L225 Difference]: With dead ends: 2851 [2023-12-16 08:09:37,762 INFO L226 Difference]: Without dead ends: 2169 [2023-12-16 08:09:37,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:37,764 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 188 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:37,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 336 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2023-12-16 08:09:37,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2125. [2023-12-16 08:09:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 1640 states have (on average 1.276829268292683) internal successors, (2094), 1699 states have internal predecessors, (2094), 247 states have call successors, (247), 177 states have call predecessors, (247), 236 states have return successors, (365), 257 states have call predecessors, (365), 245 states have call successors, (365) [2023-12-16 08:09:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 2706 transitions. [2023-12-16 08:09:37,967 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 2706 transitions. Word has length 59 [2023-12-16 08:09:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:37,969 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 2706 transitions. [2023-12-16 08:09:37,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 2706 transitions. [2023-12-16 08:09:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 08:09:37,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:37,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:37,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:38,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:38,176 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:38,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1129756660, now seen corresponding path program 1 times [2023-12-16 08:09:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:38,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343171987] [2023-12-16 08:09:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:38,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:38,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:38,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 08:09:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:38,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:38,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:38,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:38,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:38,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343171987] [2023-12-16 08:09:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343171987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:38,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784114673] [2023-12-16 08:09:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:38,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:38,301 INFO L87 Difference]: Start difference. First operand 2125 states and 2706 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:38,642 INFO L93 Difference]: Finished difference Result 4541 states and 5875 transitions. [2023-12-16 08:09:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2023-12-16 08:09:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:38,656 INFO L225 Difference]: With dead ends: 4541 [2023-12-16 08:09:38,656 INFO L226 Difference]: Without dead ends: 3243 [2023-12-16 08:09:38,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:38,661 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 63 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:38,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 427 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2023-12-16 08:09:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3211. [2023-12-16 08:09:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 2458 states have (on average 1.275427176566314) internal successors, (3135), 2538 states have internal predecessors, (3135), 367 states have call successors, (367), 289 states have call predecessors, (367), 384 states have return successors, (543), 388 states have call predecessors, (543), 365 states have call successors, (543) [2023-12-16 08:09:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 4045 transitions. [2023-12-16 08:09:38,936 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 4045 transitions. Word has length 60 [2023-12-16 08:09:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:38,936 INFO L495 AbstractCegarLoop]: Abstraction has 3211 states and 4045 transitions. [2023-12-16 08:09:38,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 4045 transitions. [2023-12-16 08:09:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 08:09:38,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:38,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:38,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:39,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:39,153 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:39,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:39,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1039441133, now seen corresponding path program 1 times [2023-12-16 08:09:39,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:39,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993620695] [2023-12-16 08:09:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:39,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:39,155 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:39,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 08:09:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:39,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:39,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:39,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:39,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993620695] [2023-12-16 08:09:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993620695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:39,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352233803] [2023-12-16 08:09:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:39,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:39,280 INFO L87 Difference]: Start difference. First operand 3211 states and 4045 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:39,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:39,595 INFO L93 Difference]: Finished difference Result 6147 states and 7783 transitions. [2023-12-16 08:09:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2023-12-16 08:09:39,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:39,610 INFO L225 Difference]: With dead ends: 6147 [2023-12-16 08:09:39,611 INFO L226 Difference]: Without dead ends: 3771 [2023-12-16 08:09:39,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:39,616 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 183 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:39,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 336 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2023-12-16 08:09:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3727. [2023-12-16 08:09:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2846 states have (on average 1.2673928320449754) internal successors, (3607), 2934 states have internal predecessors, (3607), 431 states have call successors, (431), 345 states have call predecessors, (431), 448 states have return successors, (626), 452 states have call predecessors, (626), 429 states have call successors, (626) [2023-12-16 08:09:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 4664 transitions. [2023-12-16 08:09:39,991 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 4664 transitions. Word has length 66 [2023-12-16 08:09:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:39,991 INFO L495 AbstractCegarLoop]: Abstraction has 3727 states and 4664 transitions. [2023-12-16 08:09:39,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 4664 transitions. [2023-12-16 08:09:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 08:09:39,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:39,993 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:39,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:40,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:40,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:40,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1620938651, now seen corresponding path program 1 times [2023-12-16 08:09:40,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:40,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072945507] [2023-12-16 08:09:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:40,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:40,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:40,199 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:40,228 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 (18)] Waiting until timeout for monitored process [2023-12-16 08:09:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:40,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:40,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:40,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:40,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:40,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072945507] [2023-12-16 08:09:40,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072945507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:40,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:40,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:40,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038525550] [2023-12-16 08:09:40,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:40,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:40,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:40,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:40,397 INFO L87 Difference]: Start difference. First operand 3727 states and 4664 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:40,907 INFO L93 Difference]: Finished difference Result 4347 states and 5437 transitions. [2023-12-16 08:09:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:40,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-16 08:09:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:40,940 INFO L225 Difference]: With dead ends: 4347 [2023-12-16 08:09:40,940 INFO L226 Difference]: Without dead ends: 4344 [2023-12-16 08:09:40,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:40,944 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 441 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:40,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 319 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 08:09:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2023-12-16 08:09:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4310. [2023-12-16 08:09:41,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3284 states have (on average 1.2655298416565164) internal successors, (4156), 3386 states have internal predecessors, (4156), 496 states have call successors, (496), 401 states have call predecessors, (496), 528 states have return successors, (729), 527 states have call predecessors, (729), 495 states have call successors, (729) [2023-12-16 08:09:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 5381 transitions. [2023-12-16 08:09:41,413 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 5381 transitions. Word has length 67 [2023-12-16 08:09:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:41,413 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 5381 transitions. [2023-12-16 08:09:41,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 5381 transitions. [2023-12-16 08:09:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 08:09:41,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:41,416 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:41,420 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 [2023-12-16 08:09:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:41,620 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:41,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1291137955, now seen corresponding path program 1 times [2023-12-16 08:09:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197224149] [2023-12-16 08:09:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:41,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:41,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:41,640 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:41,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 08:09:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:41,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:09:41,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:41,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 08:09:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:42,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197224149] [2023-12-16 08:09:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197224149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 08:09:42,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 08:09:42,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-16 08:09:42,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197863772] [2023-12-16 08:09:42,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 08:09:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 08:09:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 08:09:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:09:42,094 INFO L87 Difference]: Start difference. First operand 4310 states and 5381 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 08:09:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:43,407 INFO L93 Difference]: Finished difference Result 8849 states and 11137 transitions. [2023-12-16 08:09:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 08:09:43,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 68 [2023-12-16 08:09:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:43,444 INFO L225 Difference]: With dead ends: 8849 [2023-12-16 08:09:43,444 INFO L226 Difference]: Without dead ends: 8846 [2023-12-16 08:09:43,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:09:43,450 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 663 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:43,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1369 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:43,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8846 states. [2023-12-16 08:09:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 6664. [2023-12-16 08:09:44,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6664 states, 5058 states have (on average 1.2724396994859628) internal successors, (6436), 5226 states have internal predecessors, (6436), 760 states have call successors, (760), 625 states have call predecessors, (760), 844 states have return successors, (1163), 817 states have call predecessors, (1163), 759 states have call successors, (1163) [2023-12-16 08:09:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6664 states to 6664 states and 8359 transitions. [2023-12-16 08:09:44,190 INFO L78 Accepts]: Start accepts. Automaton has 6664 states and 8359 transitions. Word has length 68 [2023-12-16 08:09:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:44,190 INFO L495 AbstractCegarLoop]: Abstraction has 6664 states and 8359 transitions. [2023-12-16 08:09:44,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 08:09:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 6664 states and 8359 transitions. [2023-12-16 08:09:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 08:09:44,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:44,193 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:44,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:44,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:44,396 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:44,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash 613804699, now seen corresponding path program 2 times [2023-12-16 08:09:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:44,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848717283] [2023-12-16 08:09:44,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 08:09:44,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:44,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:44,399 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:44,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 08:09:44,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 08:09:44,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 08:09:44,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:44,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:44,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:44,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:44,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848717283] [2023-12-16 08:09:44,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848717283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:44,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:44,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465780823] [2023-12-16 08:09:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:44,475 INFO L87 Difference]: Start difference. First operand 6664 states and 8359 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:44,994 INFO L93 Difference]: Finished difference Result 9635 states and 12215 transitions. [2023-12-16 08:09:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-16 08:09:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:45,011 INFO L225 Difference]: With dead ends: 9635 [2023-12-16 08:09:45,012 INFO L226 Difference]: Without dead ends: 4332 [2023-12-16 08:09:45,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:45,025 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 219 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:45,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 394 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2023-12-16 08:09:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4308. [2023-12-16 08:09:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 3286 states have (on average 1.2507608034083992) internal successors, (4110), 3384 states have internal predecessors, (4110), 496 states have call successors, (496), 401 states have call predecessors, (496), 524 states have return successors, (697), 527 states have call predecessors, (697), 495 states have call successors, (697) [2023-12-16 08:09:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5303 transitions. [2023-12-16 08:09:45,543 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5303 transitions. Word has length 71 [2023-12-16 08:09:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:45,543 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 5303 transitions. [2023-12-16 08:09:45,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 08:09:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5303 transitions. [2023-12-16 08:09:45,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 08:09:45,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:45,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:45,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:45,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:45,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1786536504, now seen corresponding path program 1 times [2023-12-16 08:09:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:45,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111950735] [2023-12-16 08:09:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:45,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:45,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:45,756 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:45,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 08:09:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:45,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:45,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:45,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:45,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:45,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111950735] [2023-12-16 08:09:45,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111950735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:45,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:45,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:45,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989451579] [2023-12-16 08:09:45,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:45,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:45,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:45,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:45,899 INFO L87 Difference]: Start difference. First operand 4308 states and 5303 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 08:09:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:46,608 INFO L93 Difference]: Finished difference Result 10745 states and 13262 transitions. [2023-12-16 08:09:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2023-12-16 08:09:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:46,631 INFO L225 Difference]: With dead ends: 10745 [2023-12-16 08:09:46,631 INFO L226 Difference]: Without dead ends: 5956 [2023-12-16 08:09:46,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:46,643 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 84 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:46,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 522 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5956 states. [2023-12-16 08:09:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5956 to 5956. [2023-12-16 08:09:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 4496 states have (on average 1.2408807829181494) internal successors, (5579), 4639 states have internal predecessors, (5579), 694 states have call successors, (694), 569 states have call predecessors, (694), 764 states have return successors, (1021), 752 states have call predecessors, (1021), 693 states have call successors, (1021) [2023-12-16 08:09:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 7294 transitions. [2023-12-16 08:09:47,145 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 7294 transitions. Word has length 76 [2023-12-16 08:09:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:47,145 INFO L495 AbstractCegarLoop]: Abstraction has 5956 states and 7294 transitions. [2023-12-16 08:09:47,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 08:09:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 7294 transitions. [2023-12-16 08:09:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 08:09:47,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:47,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:47,156 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 (21)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:47,353 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:47,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2078764603, now seen corresponding path program 1 times [2023-12-16 08:09:47,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:47,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888389468] [2023-12-16 08:09:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:47,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:47,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:47,355 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:47,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 08:09:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:47,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 08:09:47,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 08:09:47,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:47,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:47,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888389468] [2023-12-16 08:09:47,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888389468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:47,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:47,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199162106] [2023-12-16 08:09:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:47,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:47,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:47,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:47,575 INFO L87 Difference]: Start difference. First operand 5956 states and 7294 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-16 08:09:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:48,553 INFO L93 Difference]: Finished difference Result 7474 states and 9151 transitions. [2023-12-16 08:09:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 83 [2023-12-16 08:09:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:48,574 INFO L225 Difference]: With dead ends: 7474 [2023-12-16 08:09:48,575 INFO L226 Difference]: Without dead ends: 6670 [2023-12-16 08:09:48,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:48,579 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 267 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:48,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 362 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 08:09:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6670 states. [2023-12-16 08:09:49,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6670 to 6668. [2023-12-16 08:09:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 5061 states have (on average 1.2329579134558388) internal successors, (6240), 5217 states have internal predecessors, (6240), 773 states have call successors, (773), 625 states have call predecessors, (773), 832 states have return successors, (1136), 831 states have call predecessors, (1136), 772 states have call successors, (1136) [2023-12-16 08:09:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 8149 transitions. [2023-12-16 08:09:49,270 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 8149 transitions. Word has length 83 [2023-12-16 08:09:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:49,288 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 8149 transitions. [2023-12-16 08:09:49,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-16 08:09:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 8149 transitions. [2023-12-16 08:09:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 08:09:49,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:49,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:49,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:49,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:49,494 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:49,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:49,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1427705, now seen corresponding path program 1 times [2023-12-16 08:09:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:49,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139856735] [2023-12-16 08:09:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:49,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:49,497 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:49,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 08:09:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:49,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:49,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 08:09:49,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:49,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139856735] [2023-12-16 08:09:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139856735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:49,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:49,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803225401] [2023-12-16 08:09:49,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:49,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:49,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:49,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:49,576 INFO L87 Difference]: Start difference. First operand 6668 states and 8149 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-12-16 08:09:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:50,128 INFO L93 Difference]: Finished difference Result 7844 states and 9552 transitions. [2023-12-16 08:09:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:50,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 83 [2023-12-16 08:09:50,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:50,144 INFO L225 Difference]: With dead ends: 7844 [2023-12-16 08:09:50,145 INFO L226 Difference]: Without dead ends: 6328 [2023-12-16 08:09:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:50,149 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 119 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 338 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2023-12-16 08:09:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6328. [2023-12-16 08:09:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 4792 states have (on average 1.2358096828046745) internal successors, (5922), 4943 states have internal predecessors, (5922), 732 states have call successors, (732), 597 states have call predecessors, (732), 802 states have return successors, (1081), 792 states have call predecessors, (1081), 731 states have call successors, (1081) [2023-12-16 08:09:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 7735 transitions. [2023-12-16 08:09:50,821 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 7735 transitions. Word has length 83 [2023-12-16 08:09:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:50,821 INFO L495 AbstractCegarLoop]: Abstraction has 6328 states and 7735 transitions. [2023-12-16 08:09:50,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-12-16 08:09:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 7735 transitions. [2023-12-16 08:09:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 08:09:50,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:50,826 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:50,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-16 08:09:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:51,030 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:51,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1202671524, now seen corresponding path program 1 times [2023-12-16 08:09:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100664717] [2023-12-16 08:09:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:51,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:51,032 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:51,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 08:09:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:51,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:51,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 08:09:51,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:51,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:51,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100664717] [2023-12-16 08:09:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100664717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:51,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:51,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:51,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900878141] [2023-12-16 08:09:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:51,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:51,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:51,150 INFO L87 Difference]: Start difference. First operand 6328 states and 7735 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:52,222 INFO L93 Difference]: Finished difference Result 11475 states and 14067 transitions. [2023-12-16 08:09:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2023-12-16 08:09:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:52,243 INFO L225 Difference]: With dead ends: 11475 [2023-12-16 08:09:52,243 INFO L226 Difference]: Without dead ends: 6358 [2023-12-16 08:09:52,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:52,257 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 286 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:52,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 273 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2023-12-16 08:09:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6358. [2023-12-16 08:09:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 4807 states have (on average 1.2213438735177866) internal successors, (5871), 4973 states have internal predecessors, (5871), 732 states have call successors, (732), 597 states have call predecessors, (732), 817 states have return successors, (1081), 792 states have call predecessors, (1081), 731 states have call successors, (1081) [2023-12-16 08:09:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 7684 transitions. [2023-12-16 08:09:52,934 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 7684 transitions. Word has length 85 [2023-12-16 08:09:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:52,935 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 7684 transitions. [2023-12-16 08:09:52,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 7684 transitions. [2023-12-16 08:09:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 08:09:52,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:52,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:52,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-16 08:09:53,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:53,143 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:53,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash -93421834, now seen corresponding path program 1 times [2023-12-16 08:09:53,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:53,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048460885] [2023-12-16 08:09:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:53,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:53,145 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:53,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-16 08:09:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:53,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:53,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 08:09:53,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:53,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:53,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048460885] [2023-12-16 08:09:53,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048460885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:53,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:53,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:53,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788506526] [2023-12-16 08:09:53,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:53,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:53,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:53,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:53,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:53,282 INFO L87 Difference]: Start difference. First operand 6358 states and 7684 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-12-16 08:09:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:53,939 INFO L93 Difference]: Finished difference Result 8233 states and 9965 transitions. [2023-12-16 08:09:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:53,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 85 [2023-12-16 08:09:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:53,983 INFO L225 Difference]: With dead ends: 8233 [2023-12-16 08:09:53,983 INFO L226 Difference]: Without dead ends: 6626 [2023-12-16 08:09:54,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:54,021 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 89 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:54,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 530 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2023-12-16 08:09:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6626. [2023-12-16 08:09:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6626 states, 5023 states have (on average 1.2175990443957794) internal successors, (6116), 5189 states have internal predecessors, (6116), 762 states have call successors, (762), 617 states have call predecessors, (762), 839 states have return successors, (1123), 824 states have call predecessors, (1123), 761 states have call successors, (1123) [2023-12-16 08:09:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 8001 transitions. [2023-12-16 08:09:54,751 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 8001 transitions. Word has length 85 [2023-12-16 08:09:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:54,752 INFO L495 AbstractCegarLoop]: Abstraction has 6626 states and 8001 transitions. [2023-12-16 08:09:54,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-12-16 08:09:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 8001 transitions. [2023-12-16 08:09:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 08:09:54,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:54,756 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:54,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-16 08:09:54,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:54,957 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:54,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1286896662, now seen corresponding path program 1 times [2023-12-16 08:09:54,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:54,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578384351] [2023-12-16 08:09:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:54,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:54,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:54,959 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:54,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-16 08:09:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:55,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:55,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 08:09:55,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:55,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578384351] [2023-12-16 08:09:55,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578384351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612626299] [2023-12-16 08:09:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:55,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:55,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:55,032 INFO L87 Difference]: Start difference. First operand 6626 states and 8001 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 08:09:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:55,571 INFO L93 Difference]: Finished difference Result 11532 states and 13939 transitions. [2023-12-16 08:09:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:55,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2023-12-16 08:09:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:55,587 INFO L225 Difference]: With dead ends: 11532 [2023-12-16 08:09:55,587 INFO L226 Difference]: Without dead ends: 6375 [2023-12-16 08:09:55,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:55,597 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 95 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:55,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 509 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2023-12-16 08:09:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6372. [2023-12-16 08:09:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6372 states, 4839 states have (on average 1.2064476131432114) internal successors, (5838), 4999 states have internal predecessors, (5838), 724 states have call successors, (724), 589 states have call predecessors, (724), 807 states have return successors, (1006), 786 states have call predecessors, (1006), 723 states have call successors, (1006) [2023-12-16 08:09:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6372 states to 6372 states and 7568 transitions. [2023-12-16 08:09:56,229 INFO L78 Accepts]: Start accepts. Automaton has 6372 states and 7568 transitions. Word has length 86 [2023-12-16 08:09:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:56,229 INFO L495 AbstractCegarLoop]: Abstraction has 6372 states and 7568 transitions. [2023-12-16 08:09:56,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 08:09:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 6372 states and 7568 transitions. [2023-12-16 08:09:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-16 08:09:56,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:56,243 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 08:09:56,248 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 [2023-12-16 08:09:56,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:56,447 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:56,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash -62465188, now seen corresponding path program 1 times [2023-12-16 08:09:56,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:56,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016660031] [2023-12-16 08:09:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:56,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:56,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:56,453 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:56,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-16 08:09:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:56,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:56,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 08:09:56,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:56,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:56,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016660031] [2023-12-16 08:09:56,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016660031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:56,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:56,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:56,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015771200] [2023-12-16 08:09:56,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:56,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:56,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:56,638 INFO L87 Difference]: Start difference. First operand 6372 states and 7568 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2023-12-16 08:09:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:57,451 INFO L93 Difference]: Finished difference Result 7826 states and 9323 transitions. [2023-12-16 08:09:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 121 [2023-12-16 08:09:57,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:57,465 INFO L225 Difference]: With dead ends: 7826 [2023-12-16 08:09:57,465 INFO L226 Difference]: Without dead ends: 6382 [2023-12-16 08:09:57,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:57,472 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 271 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:57,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 303 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2023-12-16 08:09:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 6382. [2023-12-16 08:09:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 4845 states have (on average 1.2016511867905058) internal successors, (5822), 5007 states have internal predecessors, (5822), 724 states have call successors, (724), 589 states have call predecessors, (724), 811 states have return successors, (994), 788 states have call predecessors, (994), 723 states have call successors, (994) [2023-12-16 08:09:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 7540 transitions. [2023-12-16 08:09:58,122 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 7540 transitions. Word has length 121 [2023-12-16 08:09:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:58,122 INFO L495 AbstractCegarLoop]: Abstraction has 6382 states and 7540 transitions. [2023-12-16 08:09:58,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2023-12-16 08:09:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 7540 transitions. [2023-12-16 08:09:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 08:09:58,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:58,131 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:58,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:58,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:58,338 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:58,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1100336040, now seen corresponding path program 1 times [2023-12-16 08:09:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217103485] [2023-12-16 08:09:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:58,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:58,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:58,341 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:58,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-16 08:09:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:58,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:58,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 08:09:58,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:58,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:58,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217103485] [2023-12-16 08:09:58,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217103485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:58,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:58,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:58,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824009088] [2023-12-16 08:09:58,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:58,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:58,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:58,479 INFO L87 Difference]: Start difference. First operand 6382 states and 7540 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-12-16 08:09:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:59,054 INFO L93 Difference]: Finished difference Result 7098 states and 8379 transitions. [2023-12-16 08:09:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 122 [2023-12-16 08:09:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:59,068 INFO L225 Difference]: With dead ends: 7098 [2023-12-16 08:09:59,068 INFO L226 Difference]: Without dead ends: 5580 [2023-12-16 08:09:59,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:59,074 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 85 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:59,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 484 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5580 states. [2023-12-16 08:09:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5580 to 5580. [2023-12-16 08:09:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5580 states, 4199 states have (on average 1.2017146939747558) internal successors, (5046), 4349 states have internal predecessors, (5046), 644 states have call successors, (644), 529 states have call predecessors, (644), 735 states have return successors, (892), 704 states have call predecessors, (892), 643 states have call successors, (892) [2023-12-16 08:09:59,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 6582 transitions. [2023-12-16 08:09:59,699 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 6582 transitions. Word has length 122 [2023-12-16 08:09:59,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:59,699 INFO L495 AbstractCegarLoop]: Abstraction has 5580 states and 6582 transitions. [2023-12-16 08:09:59,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-12-16 08:09:59,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 6582 transitions. [2023-12-16 08:09:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 08:09:59,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:59,702 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 08:09:59,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-16 08:09:59,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:59,903 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:59,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2105153301, now seen corresponding path program 1 times [2023-12-16 08:09:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:59,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102123512] [2023-12-16 08:09:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:59,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:59,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:59,928 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:59,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-16 08:10:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:00,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:00,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 08:10:00,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:00,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102123512] [2023-12-16 08:10:00,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102123512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:00,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:00,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834853621] [2023-12-16 08:10:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:00,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:00,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:00,081 INFO L87 Difference]: Start difference. First operand 5580 states and 6582 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 08:10:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:00,879 INFO L93 Difference]: Finished difference Result 6096 states and 7178 transitions. [2023-12-16 08:10:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:00,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-12-16 08:10:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:00,893 INFO L225 Difference]: With dead ends: 6096 [2023-12-16 08:10:00,893 INFO L226 Difference]: Without dead ends: 5580 [2023-12-16 08:10:00,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:00,896 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 83 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:00,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 446 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5580 states. [2023-12-16 08:10:01,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5580 to 5580. [2023-12-16 08:10:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5580 states, 4199 states have (on average 1.1998094784472493) internal successors, (5038), 4349 states have internal predecessors, (5038), 644 states have call successors, (644), 529 states have call predecessors, (644), 735 states have return successors, (892), 704 states have call predecessors, (892), 643 states have call successors, (892) [2023-12-16 08:10:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 6574 transitions. [2023-12-16 08:10:01,511 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 6574 transitions. Word has length 123 [2023-12-16 08:10:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:01,511 INFO L495 AbstractCegarLoop]: Abstraction has 5580 states and 6574 transitions. [2023-12-16 08:10:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 08:10:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 6574 transitions. [2023-12-16 08:10:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 08:10:01,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:01,515 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 08:10:01,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:01,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:01,721 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:01,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash 564461877, now seen corresponding path program 1 times [2023-12-16 08:10:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:01,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940100075] [2023-12-16 08:10:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:01,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:01,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:01,724 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:10:01,774 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 (30)] Waiting until timeout for monitored process [2023-12-16 08:10:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:01,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 08:10:01,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 08:10:02,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 08:10:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-16 08:10:02,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940100075] [2023-12-16 08:10:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940100075] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 08:10:02,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 08:10:02,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-12-16 08:10:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366458929] [2023-12-16 08:10:02,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:10:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:10:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:10:02,088 INFO L87 Difference]: Start difference. First operand 5580 states and 6574 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 08:10:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:02,778 INFO L93 Difference]: Finished difference Result 5582 states and 6576 transitions. [2023-12-16 08:10:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:10:02,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 124 [2023-12-16 08:10:02,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:02,786 INFO L225 Difference]: With dead ends: 5582 [2023-12-16 08:10:02,786 INFO L226 Difference]: Without dead ends: 4920 [2023-12-16 08:10:02,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:10:02,788 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 298 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:02,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 515 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2023-12-16 08:10:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4920. [2023-12-16 08:10:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4920 states, 3672 states have (on average 1.212962962962963) internal successors, (4454), 3814 states have internal predecessors, (4454), 568 states have call successors, (568), 477 states have call predecessors, (568), 679 states have return successors, (812), 630 states have call predecessors, (812), 567 states have call successors, (812) [2023-12-16 08:10:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4920 states to 4920 states and 5834 transitions. [2023-12-16 08:10:03,259 INFO L78 Accepts]: Start accepts. Automaton has 4920 states and 5834 transitions. Word has length 124 [2023-12-16 08:10:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:03,259 INFO L495 AbstractCegarLoop]: Abstraction has 4920 states and 5834 transitions. [2023-12-16 08:10:03,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 08:10:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4920 states and 5834 transitions. [2023-12-16 08:10:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 08:10:03,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:03,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:03,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:03,469 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:03,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash -239690980, now seen corresponding path program 1 times [2023-12-16 08:10:03,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:03,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480031340] [2023-12-16 08:10:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:03,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:03,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:03,472 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:10:03,500 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 (31)] Waiting until timeout for monitored process [2023-12-16 08:10:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:03,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:03,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-16 08:10:03,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:03,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480031340] [2023-12-16 08:10:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480031340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:03,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:10:03,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046688915] [2023-12-16 08:10:03,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:03,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:03,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:03,630 INFO L87 Difference]: Start difference. First operand 4920 states and 5834 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 08:10:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:04,858 INFO L93 Difference]: Finished difference Result 12171 states and 14520 transitions. [2023-12-16 08:10:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 08:10:04,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 145 [2023-12-16 08:10:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:04,879 INFO L225 Difference]: With dead ends: 12171 [2023-12-16 08:10:04,879 INFO L226 Difference]: Without dead ends: 7063 [2023-12-16 08:10:04,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 08:10:04,895 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 177 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:04,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 211 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 08:10:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7063 states. [2023-12-16 08:10:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7063 to 6743. [2023-12-16 08:10:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6743 states, 5006 states have (on average 1.2143427886536156) internal successors, (6079), 5184 states have internal predecessors, (6079), 788 states have call successors, (788), 666 states have call predecessors, (788), 948 states have return successors, (1106), 893 states have call predecessors, (1106), 787 states have call successors, (1106) [2023-12-16 08:10:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6743 states to 6743 states and 7973 transitions. [2023-12-16 08:10:05,678 INFO L78 Accepts]: Start accepts. Automaton has 6743 states and 7973 transitions. Word has length 145 [2023-12-16 08:10:05,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:05,678 INFO L495 AbstractCegarLoop]: Abstraction has 6743 states and 7973 transitions. [2023-12-16 08:10:05,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 08:10:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 6743 states and 7973 transitions. [2023-12-16 08:10:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-16 08:10:05,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:05,683 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] [2023-12-16 08:10:05,687 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 [2023-12-16 08:10:05,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:05,883 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:05,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -818153854, now seen corresponding path program 1 times [2023-12-16 08:10:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936846008] [2023-12-16 08:10:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:05,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:05,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:05,886 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:10:05,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-16 08:10:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:05,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:10:06,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-16 08:10:06,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:06,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936846008] [2023-12-16 08:10:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936846008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:06,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 08:10:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509909482] [2023-12-16 08:10:06,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 08:10:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:06,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 08:10:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:06,029 INFO L87 Difference]: Start difference. First operand 6743 states and 7973 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) [2023-12-16 08:10:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:06,450 INFO L93 Difference]: Finished difference Result 10575 states and 12642 transitions. [2023-12-16 08:10:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 08:10:06,450 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 [2023-12-16 08:10:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:06,457 INFO L225 Difference]: With dead ends: 10575 [2023-12-16 08:10:06,458 INFO L226 Difference]: Without dead ends: 3842 [2023-12-16 08:10:06,466 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 [2023-12-16 08:10:06,466 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 32 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:06,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 524 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:10:06,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2023-12-16 08:10:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 2950. [2023-12-16 08:10:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2301 states have (on average 1.2073011734028682) internal successors, (2778), 2355 states have internal predecessors, (2778), 293 states have call successors, (293), 227 states have call predecessors, (293), 355 states have return successors, (427), 367 states have call predecessors, (427), 292 states have call successors, (427) [2023-12-16 08:10:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3498 transitions. [2023-12-16 08:10:06,771 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3498 transitions. Word has length 217 [2023-12-16 08:10:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:06,771 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 3498 transitions. [2023-12-16 08:10:06,772 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) [2023-12-16 08:10:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3498 transitions. [2023-12-16 08:10:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-16 08:10:06,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:06,775 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] [2023-12-16 08:10:06,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-12-16 08:10:06,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:06,976 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:06,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash 415338626, now seen corresponding path program 1 times [2023-12-16 08:10:06,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:06,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009541415] [2023-12-16 08:10:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:06,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:06,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:06,978 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:10:06,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-16 08:10:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:07,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:07,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-16 08:10:07,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:07,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009541415] [2023-12-16 08:10:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009541415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:07,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:07,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353459697] [2023-12-16 08:10:07,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:07,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:07,268 INFO L87 Difference]: Start difference. First operand 2950 states and 3498 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) [2023-12-16 08:10:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:07,788 INFO L93 Difference]: Finished difference Result 7720 states and 9281 transitions. [2023-12-16 08:10:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:07,789 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 [2023-12-16 08:10:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:07,795 INFO L225 Difference]: With dead ends: 7720 [2023-12-16 08:10:07,795 INFO L226 Difference]: Without dead ends: 3017 [2023-12-16 08:10:07,802 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 [2023-12-16 08:10:07,803 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 38 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:07,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 227 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:10:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2023-12-16 08:10:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2950. [2023-12-16 08:10:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2301 states have (on average 1.1938287700999566) internal successors, (2747), 2355 states have internal predecessors, (2747), 293 states have call successors, (293), 227 states have call predecessors, (293), 355 states have return successors, (427), 367 states have call predecessors, (427), 292 states have call successors, (427) [2023-12-16 08:10:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3467 transitions. [2023-12-16 08:10:08,121 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3467 transitions. Word has length 229 [2023-12-16 08:10:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:08,122 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 3467 transitions. [2023-12-16 08:10:08,122 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-12-16 08:10:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3467 transitions. [2023-12-16 08:10:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-16 08:10:08,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:08,125 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:08,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:08,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:08,326 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:08,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2005099265, now seen corresponding path program 1 times [2023-12-16 08:10:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:08,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194012855] [2023-12-16 08:10:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:08,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:08,328 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:10:08,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-16 08:10:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:08,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:10:08,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-16 08:10:08,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:08,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:08,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194012855] [2023-12-16 08:10:08,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194012855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:08,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:08,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:10:08,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246197971] [2023-12-16 08:10:08,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:08,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:10:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:10:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:08,479 INFO L87 Difference]: Start difference. First operand 2950 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-16 08:10:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:08,812 INFO L93 Difference]: Finished difference Result 5785 states and 6867 transitions. [2023-12-16 08:10:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:10:08,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 231 [2023-12-16 08:10:08,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:08,818 INFO L225 Difference]: With dead ends: 5785 [2023-12-16 08:10:08,819 INFO L226 Difference]: Without dead ends: 2924 [2023-12-16 08:10:08,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:10:08,844 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 71 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:08,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 206 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:10:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2023-12-16 08:10:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2661. [2023-12-16 08:10:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2063 states have (on average 1.16335433834222) internal successors, (2400), 2116 states have internal predecessors, (2400), 268 states have call successors, (268), 212 states have call predecessors, (268), 329 states have return successors, (391), 332 states have call predecessors, (391), 267 states have call successors, (391) [2023-12-16 08:10:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 3059 transitions. [2023-12-16 08:10:09,269 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 3059 transitions. Word has length 231 [2023-12-16 08:10:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:09,270 INFO L495 AbstractCegarLoop]: Abstraction has 2661 states and 3059 transitions. [2023-12-16 08:10:09,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-16 08:10:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 3059 transitions. [2023-12-16 08:10:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-16 08:10:09,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:09,274 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:09,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:09,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:09,480 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:09,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2132921149, now seen corresponding path program 1 times [2023-12-16 08:10:09,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:09,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719249891] [2023-12-16 08:10:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:09,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:09,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:09,482 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:10:09,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-16 08:10:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:09,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:09,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-16 08:10:09,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:09,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719249891] [2023-12-16 08:10:09,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719249891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:09,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:09,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 08:10:09,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163928205] [2023-12-16 08:10:09,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:09,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:09,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:09,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:09,710 INFO L87 Difference]: Start difference. First operand 2661 states and 3059 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-16 08:10:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:10,127 INFO L93 Difference]: Finished difference Result 3901 states and 4529 transitions. [2023-12-16 08:10:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:10:10,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 230 [2023-12-16 08:10:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:10,130 INFO L225 Difference]: With dead ends: 3901 [2023-12-16 08:10:10,130 INFO L226 Difference]: Without dead ends: 1318 [2023-12-16 08:10:10,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:10,133 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 70 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:10,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 257 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 08:10:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-12-16 08:10:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1318. [2023-12-16 08:10:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1006 states have (on average 1.1451292246520874) internal successors, (1152), 1026 states have internal predecessors, (1152), 146 states have call successors, (146), 122 states have call predecessors, (146), 165 states have return successors, (215), 169 states have call predecessors, (215), 145 states have call successors, (215) [2023-12-16 08:10:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1513 transitions. [2023-12-16 08:10:10,333 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1513 transitions. Word has length 230 [2023-12-16 08:10:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:10,334 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 1513 transitions. [2023-12-16 08:10:10,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-16 08:10:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1513 transitions. [2023-12-16 08:10:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-16 08:10:10,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:10:10,337 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:10:10,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-16 08:10:10,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:10,543 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:10:10,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:10:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash 735193517, now seen corresponding path program 1 times [2023-12-16 08:10:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:10:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171446472] [2023-12-16 08:10:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:10:10,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:10,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:10:10,546 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:10:10,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-16 08:10:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:10:10,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:10:10,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:10:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-16 08:10:10,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:10:10,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:10:10,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171446472] [2023-12-16 08:10:10,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171446472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:10:10,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:10:10,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 08:10:10,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576644776] [2023-12-16 08:10:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:10:10,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:10:10,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:10:10,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:10:10,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:10:10,688 INFO L87 Difference]: Start difference. First operand 1318 states and 1513 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-16 08:10:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:10:10,888 INFO L93 Difference]: Finished difference Result 1667 states and 1900 transitions. [2023-12-16 08:10:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:10:10,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 233 [2023-12-16 08:10:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:10:10,889 INFO L225 Difference]: With dead ends: 1667 [2023-12-16 08:10:10,889 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 08:10:10,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:10:10,891 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 62 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:10:10,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 246 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:10:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 08:10:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 08:10:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 08:10:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 08:10:10,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 233 [2023-12-16 08:10:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:10:10,892 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 08:10:10,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-16 08:10:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 08:10:10,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 08:10:10,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 08:10:10,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 08:10:10,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-16 08:10:11,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:10:11,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 08:10:28,675 WARN L235 SmtUtils]: Removed 45 from assertion stack [2023-12-16 08:10:28,675 WARN L619 AbstractCegarLoop]: Verification canceled: while SimplifyDDAWithTimeout was simplifying term of DAG size 273 for 964ms.. [2023-12-16 08:10:28,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 08:10:28,691 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 08:10:28,692 INFO L158 Benchmark]: Toolchain (without parser) took 62530.73ms. Allocated memory was 239.1MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 195.2MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 601.9MB. Max. memory is 8.0GB. [2023-12-16 08:10:28,692 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 08:10:28,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.58ms. Allocated memory is still 239.1MB. Free memory was 195.2MB in the beginning and 176.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 08:10:28,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.28ms. Allocated memory is still 239.1MB. Free memory was 176.9MB in the beginning and 174.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 08:10:28,693 INFO L158 Benchmark]: Boogie Preprocessor took 114.82ms. Allocated memory is still 239.1MB. Free memory was 174.3MB in the beginning and 171.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 08:10:28,693 INFO L158 Benchmark]: RCFGBuilder took 733.23ms. Allocated memory is still 239.1MB. Free memory was 171.1MB in the beginning and 135.0MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-16 08:10:28,693 INFO L158 Benchmark]: TraceAbstraction took 61187.64ms. Allocated memory was 239.1MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 134.4MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 541.1MB. Max. memory is 8.0GB. [2023-12-16 08:10:28,696 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 426.58ms. Allocated memory is still 239.1MB. Free memory was 195.2MB in the beginning and 176.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.28ms. Allocated memory is still 239.1MB. Free memory was 176.9MB in the beginning and 174.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 114.82ms. Allocated memory is still 239.1MB. Free memory was 174.3MB in the beginning and 171.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 733.23ms. Allocated memory is still 239.1MB. Free memory was 171.1MB in the beginning and 135.0MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 61187.64ms. Allocated memory was 239.1MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 134.4MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 541.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∧-15-2-19-1 term,while PolyPacSimplificationTermWalker was simplifying 19 xjuncts wrt. a ∧-15-18-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown