/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/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 16:30:07,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 16:30:07,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 16:30:07,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 16:30:07,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 16:30:07,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 16:30:07,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 16:30:07,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 16:30:07,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 16:30:07,371 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 16:30:07,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 16:30:07,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 16:30:07,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 16:30:07,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 16:30:07,377 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 16:30:07,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 16:30:07,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 16:30:07,378 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 16:30:07,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 16:30:07,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 16:30:07,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 16:30:07,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 16:30:07,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 16:30:07,382 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 16:30:07,383 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 16:30:07,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 16:30:07,383 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 16:30:07,383 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 16:30:07,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 16:30:07,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 16:30:07,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 16:30:07,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 16:30:07,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 16:30:07,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 16:30:07,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:30:07,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 16:30:07,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 16:30:07,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 16:30:07,385 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 16:30:07,385 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 16:30:07,386 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 16:30:07,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 16:30:07,388 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 16:30:07,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 16:30:07,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 16:30:07,388 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 16:30:07,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 16:30:07,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 16:30:07,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 16:30:07,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 16:30:07,599 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 16:30:07,600 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 16:30:07,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-39.i [2023-12-24 16:30:08,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 16:30:08,816 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 16:30:08,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-39.i [2023-12-24 16:30:08,838 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcc6da469/103eee48271b44dfb4ee0ed3df8dfc5c/FLAG4aac3077d [2023-12-24 16:30:09,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcc6da469/103eee48271b44dfb4ee0ed3df8dfc5c [2023-12-24 16:30:09,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 16:30:09,238 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 16:30:09,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 16:30:09,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 16:30:09,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 16:30:09,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a73be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09, skipping insertion in model container [2023-12-24 16:30:09,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 16:30:09,409 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-39.i[916,929] [2023-12-24 16:30:09,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:30:09,484 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 16:30:09,493 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-39.i[916,929] [2023-12-24 16:30:09,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 16:30:09,529 INFO L206 MainTranslator]: Completed translation [2023-12-24 16:30:09,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09 WrapperNode [2023-12-24 16:30:09,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 16:30:09,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 16:30:09,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 16:30:09,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 16:30:09,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,582 INFO L138 Inliner]: procedures = 36, calls = 199, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 614 [2023-12-24 16:30:09,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 16:30:09,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 16:30:09,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 16:30:09,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 16:30:09,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,618 INFO L175 MemorySlicer]: Split 160 memory accesses to 13 slices as follows [2, 7, 30, 10, 22, 28, 9, 12, 12, 8, 7, 7, 6]. 19 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 16 writes are split as follows [0, 1, 1, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1]. [2023-12-24 16:30:09,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 16:30:09,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 16:30:09,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 16:30:09,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 16:30:09,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (1/1) ... [2023-12-24 16:30:09,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 16:30:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 16:30:09,694 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) [2023-12-24 16:30:09,786 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 [2023-12-24 16:30:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 16:30:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 16:30:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 16:30:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 16:30:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 16:30:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 16:30:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#8 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#9 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#10 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#11 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#12 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 16:30:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 16:30:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 16:30:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 16:30:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 16:30:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 16:30:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 16:30:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#7 [2023-12-24 16:30:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#8 [2023-12-24 16:30:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#9 [2023-12-24 16:30:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#10 [2023-12-24 16:30:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#11 [2023-12-24 16:30:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#12 [2023-12-24 16:30:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 16:30:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 16:30:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 16:30:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#7 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#8 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#9 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#10 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#11 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#12 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 16:30:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#7 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#8 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#9 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#10 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#11 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#12 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 16:30:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-24 16:30:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-24 16:30:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-24 16:30:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-24 16:30:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-24 16:30:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-12-24 16:30:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2023-12-24 16:30:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2023-12-24 16:30:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2023-12-24 16:30:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2023-12-24 16:30:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2023-12-24 16:30:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 16:30:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 16:30:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 16:30:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 16:30:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 16:30:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#7 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#8 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#9 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#10 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#11 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#12 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 16:30:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#7 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#8 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#9 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#10 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#11 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#12 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 16:30:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 16:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 16:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 16:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 16:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 16:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#7 [2023-12-24 16:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#8 [2023-12-24 16:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#9 [2023-12-24 16:30:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#10 [2023-12-24 16:30:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#11 [2023-12-24 16:30:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#12 [2023-12-24 16:30:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 16:30:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 16:30:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 16:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2023-12-24 16:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#8 [2023-12-24 16:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#9 [2023-12-24 16:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#10 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#11 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#12 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#7 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#8 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#9 [2023-12-24 16:30:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#10 [2023-12-24 16:30:09,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#11 [2023-12-24 16:30:09,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#12 [2023-12-24 16:30:09,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 16:30:09,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 16:30:09,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-24 16:30:09,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-24 16:30:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-24 16:30:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-24 16:30:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-24 16:30:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-12-24 16:30:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2023-12-24 16:30:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2023-12-24 16:30:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2023-12-24 16:30:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2023-12-24 16:30:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2023-12-24 16:30:10,042 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 16:30:10,044 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 16:30:10,992 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 16:30:11,038 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 16:30:11,039 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 16:30:11,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:30:11 BoogieIcfgContainer [2023-12-24 16:30:11,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 16:30:11,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 16:30:11,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 16:30:11,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 16:30:11,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:30:09" (1/3) ... [2023-12-24 16:30:11,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea601ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:30:11, skipping insertion in model container [2023-12-24 16:30:11,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:30:09" (2/3) ... [2023-12-24 16:30:11,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea601ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:30:11, skipping insertion in model container [2023-12-24 16:30:11,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:30:11" (3/3) ... [2023-12-24 16:30:11,046 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-39.i [2023-12-24 16:30:11,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 16:30:11,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 16:30:11,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 16:30:11,118 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;@6c6485f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 16:30:11,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 16:30:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 89 states have internal predecessors, (130), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:30:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 16:30:11,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:30:11,136 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:30:11,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:30:11,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:30:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -44095244, now seen corresponding path program 1 times [2023-12-24 16:30:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:30:11,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751892126] [2023-12-24 16:30:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:30:11,158 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 [2023-12-24 16:30:11,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:30:11,188 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) [2023-12-24 16:30:11,222 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 [2023-12-24 16:30:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:30:11,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 16:30:11,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:30:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-24 16:30:11,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:30:11,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:30:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751892126] [2023-12-24 16:30:11,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751892126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:30:11,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:30:11,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 16:30:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394032668] [2023-12-24 16:30:11,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:30:11,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 16:30:11,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:30:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 16:30:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:30:11,646 INFO L87 Difference]: Start difference. First operand has 107 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 89 states have internal predecessors, (130), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:30:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:30:11,715 INFO L93 Difference]: Finished difference Result 211 states and 338 transitions. [2023-12-24 16:30:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 16:30:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2023-12-24 16:30:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:30:11,728 INFO L225 Difference]: With dead ends: 211 [2023-12-24 16:30:11,728 INFO L226 Difference]: Without dead ends: 105 [2023-12-24 16:30:11,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 16:30:11,737 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:30:11,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 16:30:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-24 16:30:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-24 16:30:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 87 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:30:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 157 transitions. [2023-12-24 16:30:11,794 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 157 transitions. Word has length 121 [2023-12-24 16:30:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:30:11,794 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 157 transitions. [2023-12-24 16:30:11,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:30:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 157 transitions. [2023-12-24 16:30:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 16:30:11,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:30:11,803 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:30:11,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 16:30:12,012 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 [2023-12-24 16:30:12,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:30:12,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:30:12,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1453835576, now seen corresponding path program 1 times [2023-12-24 16:30:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:30:12,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041531115] [2023-12-24 16:30:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:30:12,017 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 [2023-12-24 16:30:12,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:30:12,018 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) [2023-12-24 16:30:12,020 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 [2023-12-24 16:30:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:30:12,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-24 16:30:12,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:30:17,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:30:18,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:30:18,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 56 [2023-12-24 16:30:18,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:30:19,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2023-12-24 16:30:19,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 32 [2023-12-24 16:30:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 20 proven. 348 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 16:30:19,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:30:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:30:20,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:30:20,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041531115] [2023-12-24 16:30:20,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041531115] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:30:20,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:30:20,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [45] total 53 [2023-12-24 16:30:20,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266029668] [2023-12-24 16:30:20,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:30:20,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:30:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:30:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:30:20,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2562, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 16:30:20,956 INFO L87 Difference]: Start difference. First operand 105 states and 157 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:30:24,997 INFO L93 Difference]: Finished difference Result 355 states and 530 transitions. [2023-12-24 16:30:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:30:24,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-24 16:30:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:30:25,000 INFO L225 Difference]: With dead ends: 355 [2023-12-24 16:30:25,000 INFO L226 Difference]: Without dead ends: 251 [2023-12-24 16:30:25,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=249, Invalid=3057, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 16:30:25,003 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 330 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:30:25,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1029 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 16:30:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-24 16:30:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 151. [2023-12-24 16:30:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 128 states have (on average 1.4296875) internal successors, (183), 129 states have internal predecessors, (183), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:30:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 223 transitions. [2023-12-24 16:30:25,021 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 223 transitions. Word has length 121 [2023-12-24 16:30:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:30:25,022 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 223 transitions. [2023-12-24 16:30:25,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 223 transitions. [2023-12-24 16:30:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 16:30:25,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:30:25,023 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:30:25,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 16:30:25,224 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 [2023-12-24 16:30:25,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:30:25,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:30:25,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2031785094, now seen corresponding path program 1 times [2023-12-24 16:30:25,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:30:25,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943340280] [2023-12-24 16:30:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:30:25,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:30:25,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:30:25,228 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) [2023-12-24 16:30:25,228 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 (4)] Waiting until timeout for monitored process [2023-12-24 16:30:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:30:25,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-24 16:30:25,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:30:30,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:30:31,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:30:31,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:30:31,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2023-12-24 16:30:32,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 16:30:32,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2023-12-24 16:30:32,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:30:32,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 68 [2023-12-24 16:30:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 20 proven. 348 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 16:30:33,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:30:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:30:35,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:30:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943340280] [2023-12-24 16:30:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943340280] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:30:35,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:30:35,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [47] total 56 [2023-12-24 16:30:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594952940] [2023-12-24 16:30:35,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:30:35,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:30:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:30:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:30:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2885, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 16:30:35,688 INFO L87 Difference]: Start difference. First operand 151 states and 223 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:30:39,586 INFO L93 Difference]: Finished difference Result 349 states and 515 transitions. [2023-12-24 16:30:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:30:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-24 16:30:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:30:39,590 INFO L225 Difference]: With dead ends: 349 [2023-12-24 16:30:39,590 INFO L226 Difference]: Without dead ends: 199 [2023-12-24 16:30:39,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=266, Invalid=3766, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 16:30:39,592 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 335 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:30:39,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1172 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 16:30:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-24 16:30:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 151. [2023-12-24 16:30:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 128 states have (on average 1.421875) internal successors, (182), 129 states have internal predecessors, (182), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:30:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 222 transitions. [2023-12-24 16:30:39,600 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 222 transitions. Word has length 121 [2023-12-24 16:30:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:30:39,601 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 222 transitions. [2023-12-24 16:30:39,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 222 transitions. [2023-12-24 16:30:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 16:30:39,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:30:39,602 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:30:39,610 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 [2023-12-24 16:30:39,810 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 [2023-12-24 16:30:39,811 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:30:39,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:30:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash 442718326, now seen corresponding path program 1 times [2023-12-24 16:30:39,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:30:39,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198769846] [2023-12-24 16:30:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:30:39,812 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 [2023-12-24 16:30:39,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:30:39,813 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) [2023-12-24 16:30:39,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 16:30:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:30:40,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 16:30:40,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:30:42,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:30:43,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 16:30:43,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-12-24 16:30:43,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:30:43,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 56 [2023-12-24 16:30:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 338 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-24 16:30:43,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:30:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:30:45,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:30:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198769846] [2023-12-24 16:30:45,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198769846] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:30:45,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:30:45,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [36] total 43 [2023-12-24 16:30:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516120685] [2023-12-24 16:30:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:30:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:30:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:30:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:30:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1665, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:30:45,126 INFO L87 Difference]: Start difference. First operand 151 states and 222 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:30:46,814 INFO L93 Difference]: Finished difference Result 374 states and 554 transitions. [2023-12-24 16:30:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 16:30:46,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-24 16:30:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:30:46,817 INFO L225 Difference]: With dead ends: 374 [2023-12-24 16:30:46,817 INFO L226 Difference]: Without dead ends: 224 [2023-12-24 16:30:46,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=175, Invalid=2081, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 16:30:46,819 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 179 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:30:46,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1078 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 16:30:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-24 16:30:46,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 169. [2023-12-24 16:30:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 147 states have internal predecessors, (210), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:30:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 250 transitions. [2023-12-24 16:30:46,827 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 250 transitions. Word has length 121 [2023-12-24 16:30:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:30:46,828 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 250 transitions. [2023-12-24 16:30:46,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 250 transitions. [2023-12-24 16:30:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-24 16:30:46,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:30:46,829 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:30:46,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 16:30:47,044 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 [2023-12-24 16:30:47,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:30:47,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:30:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1252064952, now seen corresponding path program 1 times [2023-12-24 16:30:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:30:47,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649808328] [2023-12-24 16:30:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:30:47,053 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 [2023-12-24 16:30:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:30:47,061 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) [2023-12-24 16:30:47,062 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 [2023-12-24 16:30:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:30:47,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-24 16:30:47,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:30:51,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:30:52,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:30:52,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 56 [2023-12-24 16:30:52,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:30:53,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2023-12-24 16:30:53,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 55 [2023-12-24 16:30:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 20 proven. 348 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 16:30:53,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:30:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:30:55,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:30:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649808328] [2023-12-24 16:30:55,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649808328] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:30:55,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:30:55,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [45] total 53 [2023-12-24 16:30:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041352267] [2023-12-24 16:30:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:30:55,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:30:55,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:30:55,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:30:55,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2562, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 16:30:55,048 INFO L87 Difference]: Start difference. First operand 169 states and 250 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:30:57,570 INFO L93 Difference]: Finished difference Result 464 states and 684 transitions. [2023-12-24 16:30:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 16:30:57,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-24 16:30:57,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:30:57,572 INFO L225 Difference]: With dead ends: 464 [2023-12-24 16:30:57,572 INFO L226 Difference]: Without dead ends: 296 [2023-12-24 16:30:57,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=249, Invalid=3057, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 16:30:57,574 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 311 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:30:57,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1100 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 16:30:57,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-24 16:30:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 171. [2023-12-24 16:30:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 148 states have (on average 1.4324324324324325) internal successors, (212), 149 states have internal predecessors, (212), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:30:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 252 transitions. [2023-12-24 16:30:57,581 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 252 transitions. Word has length 121 [2023-12-24 16:30:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:30:57,582 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 252 transitions. [2023-12-24 16:30:57,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:30:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 252 transitions. [2023-12-24 16:30:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 16:30:57,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:30:57,583 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:30:57,590 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 [2023-12-24 16:30:57,790 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 [2023-12-24 16:30:57,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:30:57,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:30:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash 890439998, now seen corresponding path program 1 times [2023-12-24 16:30:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:30:57,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276672140] [2023-12-24 16:30:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:30:57,792 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 [2023-12-24 16:30:57,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:30:57,793 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) [2023-12-24 16:30:57,812 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 [2023-12-24 16:30:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:30:58,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 16:30:58,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:02,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:31:02,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2023-12-24 16:31:03,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2023-12-24 16:31:03,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:31:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 20 proven. 348 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 16:31:03,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:04,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276672140] [2023-12-24 16:31:04,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276672140] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:04,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:04,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [43] total 49 [2023-12-24 16:31:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3795170] [2023-12-24 16:31:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:04,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:31:04,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:04,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:31:04,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2186, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 16:31:04,421 INFO L87 Difference]: Start difference. First operand 171 states and 252 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:31:05,158 INFO L93 Difference]: Finished difference Result 464 states and 683 transitions. [2023-12-24 16:31:05,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 16:31:05,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-24 16:31:05,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:31:05,160 INFO L225 Difference]: With dead ends: 464 [2023-12-24 16:31:05,160 INFO L226 Difference]: Without dead ends: 294 [2023-12-24 16:31:05,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=182, Invalid=2368, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 16:31:05,161 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 308 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:31:05,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 600 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 16:31:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-24 16:31:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 187. [2023-12-24 16:31:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 164 states have (on average 1.4451219512195121) internal successors, (237), 165 states have internal predecessors, (237), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:31:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 277 transitions. [2023-12-24 16:31:05,168 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 277 transitions. Word has length 122 [2023-12-24 16:31:05,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:31:05,171 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 277 transitions. [2023-12-24 16:31:05,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 277 transitions. [2023-12-24 16:31:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 16:31:05,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:31:05,173 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:31:05,181 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 [2023-12-24 16:31:05,377 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 [2023-12-24 16:31:05,377 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:31:05,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:31:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1699786624, now seen corresponding path program 1 times [2023-12-24 16:31:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:31:05,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793558855] [2023-12-24 16:31:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:31:05,378 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 [2023-12-24 16:31:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:31:05,379 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) [2023-12-24 16:31:05,384 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 [2023-12-24 16:31:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:31:05,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 16:31:05,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:08,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:31:09,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 16:31:09,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-12-24 16:31:09,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:31:09,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 56 [2023-12-24 16:31:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 18 proven. 282 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:31:09,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:10,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793558855] [2023-12-24 16:31:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793558855] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [36] total 43 [2023-12-24 16:31:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774682713] [2023-12-24 16:31:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:10,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 16:31:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 16:31:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1665, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 16:31:10,719 INFO L87 Difference]: Start difference. First operand 187 states and 277 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:31:12,223 INFO L93 Difference]: Finished difference Result 404 states and 597 transitions. [2023-12-24 16:31:12,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:31:12,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-24 16:31:12,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:31:12,234 INFO L225 Difference]: With dead ends: 404 [2023-12-24 16:31:12,234 INFO L226 Difference]: Without dead ends: 218 [2023-12-24 16:31:12,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=167, Invalid=1995, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 16:31:12,237 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 161 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:31:12,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1007 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 16:31:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-24 16:31:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 183. [2023-12-24 16:31:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 160 states have (on average 1.45) internal successors, (232), 161 states have internal predecessors, (232), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:31:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 272 transitions. [2023-12-24 16:31:12,246 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 272 transitions. Word has length 122 [2023-12-24 16:31:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:31:12,247 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 272 transitions. [2023-12-24 16:31:12,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 272 transitions. [2023-12-24 16:31:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 16:31:12,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:31:12,248 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:31:12,259 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 [2023-12-24 16:31:12,459 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 [2023-12-24 16:31:12,460 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:31:12,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:31:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash 419922946, now seen corresponding path program 1 times [2023-12-24 16:31:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:31:12,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627795494] [2023-12-24 16:31:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:31:12,461 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 [2023-12-24 16:31:12,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:31:12,462 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) [2023-12-24 16:31:12,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 16:31:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:31:12,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:31:12,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:14,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-24 16:31:14,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 16:31:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 316 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 16:31:14,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:14,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627795494] [2023-12-24 16:31:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627795494] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 27 [2023-12-24 16:31:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153449910] [2023-12-24 16:31:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:31:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:14,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:31:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:31:14,398 INFO L87 Difference]: Start difference. First operand 183 states and 272 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:31:14,759 INFO L93 Difference]: Finished difference Result 493 states and 731 transitions. [2023-12-24 16:31:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:31:14,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-24 16:31:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:31:14,761 INFO L225 Difference]: With dead ends: 493 [2023-12-24 16:31:14,761 INFO L226 Difference]: Without dead ends: 311 [2023-12-24 16:31:14,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:31:14,762 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 245 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:31:14,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 535 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:31:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-24 16:31:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 200. [2023-12-24 16:31:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 177 states have (on average 1.4689265536723164) internal successors, (260), 178 states have internal predecessors, (260), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:31:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 300 transitions. [2023-12-24 16:31:14,767 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 300 transitions. Word has length 122 [2023-12-24 16:31:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:31:14,768 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 300 transitions. [2023-12-24 16:31:14,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 300 transitions. [2023-12-24 16:31:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-24 16:31:14,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:31:14,769 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:31:14,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 16:31:14,969 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 [2023-12-24 16:31:14,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:31:14,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:31:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1412313903, now seen corresponding path program 1 times [2023-12-24 16:31:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:31:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197259860] [2023-12-24 16:31:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:31:14,971 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 [2023-12-24 16:31:14,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:31:14,972 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) [2023-12-24 16:31:14,975 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 [2023-12-24 16:31:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:31:15,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:31:15,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:15,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:31:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 16:31:15,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:15,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:15,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197259860] [2023-12-24 16:31:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197259860] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:15,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2023-12-24 16:31:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271411587] [2023-12-24 16:31:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:31:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:31:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 16:31:15,456 INFO L87 Difference]: Start difference. First operand 200 states and 300 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:31:15,798 INFO L93 Difference]: Finished difference Result 459 states and 685 transitions. [2023-12-24 16:31:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:31:15,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-12-24 16:31:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:31:15,800 INFO L225 Difference]: With dead ends: 459 [2023-12-24 16:31:15,800 INFO L226 Difference]: Without dead ends: 260 [2023-12-24 16:31:15,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:31:15,801 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 222 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:31:15,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 764 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:31:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-24 16:31:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 204. [2023-12-24 16:31:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 181 states have (on average 1.4640883977900552) internal successors, (265), 182 states have internal predecessors, (265), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 16:31:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 305 transitions. [2023-12-24 16:31:15,806 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 305 transitions. Word has length 123 [2023-12-24 16:31:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:31:15,807 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 305 transitions. [2023-12-24 16:31:15,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 305 transitions. [2023-12-24 16:31:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:31:15,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:31:15,809 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:31:15,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-24 16:31:16,016 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 [2023-12-24 16:31:16,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:31:16,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:31:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash 18340148, now seen corresponding path program 1 times [2023-12-24 16:31:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:31:16,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996192090] [2023-12-24 16:31:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:31:16,018 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 [2023-12-24 16:31:16,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:31:16,020 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) [2023-12-24 16:31:16,021 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 [2023-12-24 16:31:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:31:16,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 16:31:16,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:17,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:31:17,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:31:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 316 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 16:31:17,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:18,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:18,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996192090] [2023-12-24 16:31:18,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996192090] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:18,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:18,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 27 [2023-12-24 16:31:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774448630] [2023-12-24 16:31:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:31:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:31:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2023-12-24 16:31:18,086 INFO L87 Difference]: Start difference. First operand 204 states and 305 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:31:18,500 INFO L93 Difference]: Finished difference Result 457 states and 674 transitions. [2023-12-24 16:31:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:31:18,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:31:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:31:18,502 INFO L225 Difference]: With dead ends: 457 [2023-12-24 16:31:18,502 INFO L226 Difference]: Without dead ends: 254 [2023-12-24 16:31:18,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2023-12-24 16:31:18,503 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 203 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 16:31:18,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 371 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 16:31:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-24 16:31:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 168. [2023-12-24 16:31:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 149 states have (on average 1.4563758389261745) internal successors, (217), 149 states have internal predecessors, (217), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:31:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 249 transitions. [2023-12-24 16:31:18,507 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 249 transitions. Word has length 124 [2023-12-24 16:31:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:31:18,507 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 249 transitions. [2023-12-24 16:31:18,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 249 transitions. [2023-12-24 16:31:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:31:18,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:31:18,508 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:31:18,520 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 [2023-12-24 16:31:18,720 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 [2023-12-24 16:31:18,720 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:31:18,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:31:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 827686774, now seen corresponding path program 1 times [2023-12-24 16:31:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:31:18,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74690673] [2023-12-24 16:31:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:31:18,722 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 [2023-12-24 16:31:18,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:31:18,723 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) [2023-12-24 16:31:18,733 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 [2023-12-24 16:31:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:31:19,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-24 16:31:19,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:23,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:31:23,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:31:24,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2023-12-24 16:31:24,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-24 16:31:24,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2023-12-24 16:31:24,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2023-12-24 16:31:24,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:31:24,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 51 [2023-12-24 16:31:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 20 proven. 348 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 16:31:25,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:28,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:28,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74690673] [2023-12-24 16:31:28,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74690673] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:28,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:28,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [47] total 56 [2023-12-24 16:31:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926581742] [2023-12-24 16:31:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:31:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:28,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:31:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2884, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 16:31:28,130 INFO L87 Difference]: Start difference. First operand 168 states and 249 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:31:32,791 INFO L93 Difference]: Finished difference Result 453 states and 667 transitions. [2023-12-24 16:31:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:31:32,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:31:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:31:32,793 INFO L225 Difference]: With dead ends: 453 [2023-12-24 16:31:32,794 INFO L226 Difference]: Without dead ends: 286 [2023-12-24 16:31:32,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=275, Invalid=3885, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 16:31:32,795 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 281 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:31:32,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1255 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 16:31:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-24 16:31:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 174. [2023-12-24 16:31:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 155 states have (on average 1.4451612903225806) internal successors, (224), 155 states have internal predecessors, (224), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:31:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2023-12-24 16:31:32,800 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 124 [2023-12-24 16:31:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:31:32,800 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2023-12-24 16:31:32,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2023-12-24 16:31:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:31:32,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:31:32,801 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:31:32,813 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 [2023-12-24 16:31:33,010 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 [2023-12-24 16:31:33,011 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:31:33,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:31:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1085852212, now seen corresponding path program 1 times [2023-12-24 16:31:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:31:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577152425] [2023-12-24 16:31:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:31:33,012 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 [2023-12-24 16:31:33,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:31:33,013 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) [2023-12-24 16:31:33,014 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 [2023-12-24 16:31:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:31:33,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 16:31:33,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:38,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:31:38,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:31:38,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-24 16:31:38,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2023-12-24 16:31:39,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 16:31:39,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 63 [2023-12-24 16:31:39,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-12-24 16:31:39,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 63 [2023-12-24 16:31:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 20 proven. 348 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 16:31:39,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:42,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:42,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577152425] [2023-12-24 16:31:42,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577152425] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:42,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:42,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [47] total 56 [2023-12-24 16:31:42,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462139423] [2023-12-24 16:31:42,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:42,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:31:42,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:31:42,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2883, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 16:31:42,548 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:31:46,319 INFO L93 Difference]: Finished difference Result 462 states and 677 transitions. [2023-12-24 16:31:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:31:46,320 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:31:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:31:46,321 INFO L225 Difference]: With dead ends: 462 [2023-12-24 16:31:46,321 INFO L226 Difference]: Without dead ends: 289 [2023-12-24 16:31:46,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=268, Invalid=3764, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 16:31:46,323 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 281 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:31:46,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1308 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 16:31:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-24 16:31:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 172. [2023-12-24 16:31:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 153 states have (on average 1.4444444444444444) internal successors, (221), 153 states have internal predecessors, (221), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:31:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 253 transitions. [2023-12-24 16:31:46,327 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 253 transitions. Word has length 124 [2023-12-24 16:31:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:31:46,327 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 253 transitions. [2023-12-24 16:31:46,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:31:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 253 transitions. [2023-12-24 16:31:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:31:46,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:31:46,328 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:31:46,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-24 16:31:46,528 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 [2023-12-24 16:31:46,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:31:46,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:31:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1570007754, now seen corresponding path program 1 times [2023-12-24 16:31:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:31:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511583488] [2023-12-24 16:31:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:31:46,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:31:46,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:31:46,531 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) [2023-12-24 16:31:46,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 16:31:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:31:46,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-24 16:31:46,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:31:49,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:31:50,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:31:50,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-24 16:31:50,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:31:50,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 67 [2023-12-24 16:31:50,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 70 [2023-12-24 16:31:50,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2023-12-24 16:31:51,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 70 [2023-12-24 16:31:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 338 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-24 16:31:51,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:31:53,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-12-24 16:31:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:31:55,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:31:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511583488] [2023-12-24 16:31:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511583488] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:31:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:31:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [39] total 49 [2023-12-24 16:31:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392956047] [2023-12-24 16:31:55,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:31:55,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:31:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:31:55,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:31:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2165, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 16:31:55,279 INFO L87 Difference]: Start difference. First operand 172 states and 253 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:01,716 INFO L93 Difference]: Finished difference Result 454 states and 667 transitions. [2023-12-24 16:32:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:32:01,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:32:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:01,719 INFO L225 Difference]: With dead ends: 454 [2023-12-24 16:32:01,719 INFO L226 Difference]: Without dead ends: 283 [2023-12-24 16:32:01,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 16:32:01,720 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 320 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:01,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1678 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-24 16:32:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-24 16:32:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 176. [2023-12-24 16:32:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 157 states have (on average 1.4394904458598725) internal successors, (226), 157 states have internal predecessors, (226), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 258 transitions. [2023-12-24 16:32:01,724 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 258 transitions. Word has length 124 [2023-12-24 16:32:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:01,724 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 258 transitions. [2023-12-24 16:32:01,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 258 transitions. [2023-12-24 16:32:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 16:32:01,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:01,725 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:01,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-24 16:32:01,926 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 [2023-12-24 16:32:01,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:01,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1311842316, now seen corresponding path program 1 times [2023-12-24 16:32:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384663473] [2023-12-24 16:32:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:01,927 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 [2023-12-24 16:32:01,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:01,928 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) [2023-12-24 16:32:01,929 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 [2023-12-24 16:32:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:02,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 16:32:02,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:07,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:32:07,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:32:07,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-12-24 16:32:07,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:32:07,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 16:32:08,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 63 [2023-12-24 16:32:08,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-12-24 16:32:08,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 63 [2023-12-24 16:32:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 20 proven. 348 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 16:32:09,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:12,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384663473] [2023-12-24 16:32:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384663473] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:12,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [47] total 56 [2023-12-24 16:32:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655513965] [2023-12-24 16:32:12,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:12,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 16:32:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:12,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 16:32:12,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2883, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 16:32:12,578 INFO L87 Difference]: Start difference. First operand 176 states and 258 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:18,609 INFO L93 Difference]: Finished difference Result 468 states and 683 transitions. [2023-12-24 16:32:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 16:32:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-24 16:32:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:18,613 INFO L225 Difference]: With dead ends: 468 [2023-12-24 16:32:18,613 INFO L226 Difference]: Without dead ends: 293 [2023-12-24 16:32:18,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=268, Invalid=3764, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 16:32:18,615 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 286 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1545 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-24 16:32:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-24 16:32:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 174. [2023-12-24 16:32:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 155 states have (on average 1.4387096774193548) internal successors, (223), 155 states have internal predecessors, (223), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:18,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 255 transitions. [2023-12-24 16:32:18,619 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 255 transitions. Word has length 124 [2023-12-24 16:32:18,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:18,620 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 255 transitions. [2023-12-24 16:32:18,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:18,620 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 255 transitions. [2023-12-24 16:32:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 16:32:18,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:18,621 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:18,646 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 [2023-12-24 16:32:18,828 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 [2023-12-24 16:32:18,828 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:18,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1806636405, now seen corresponding path program 1 times [2023-12-24 16:32:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:18,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459465582] [2023-12-24 16:32:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:18,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:32:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:18,830 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) [2023-12-24 16:32:18,832 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 [2023-12-24 16:32:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:19,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 16:32:19,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:19,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:32:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:19,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:32:19,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459465582] [2023-12-24 16:32:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459465582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:32:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:32:19,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 16:32:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101383436] [2023-12-24 16:32:19,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 16:32:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 16:32:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 16:32:19,282 INFO L87 Difference]: Start difference. First operand 174 states and 255 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:19,570 INFO L93 Difference]: Finished difference Result 219 states and 314 transitions. [2023-12-24 16:32:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 16:32:19,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2023-12-24 16:32:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:19,571 INFO L225 Difference]: With dead ends: 219 [2023-12-24 16:32:19,571 INFO L226 Difference]: Without dead ends: 217 [2023-12-24 16:32:19,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:32:19,573 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 90 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:19,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 666 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:32:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-24 16:32:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2023-12-24 16:32:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 177 states have (on average 1.4180790960451977) internal successors, (251), 177 states have internal predecessors, (251), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 283 transitions. [2023-12-24 16:32:19,576 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 283 transitions. Word has length 125 [2023-12-24 16:32:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:19,577 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 283 transitions. [2023-12-24 16:32:19,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 283 transitions. [2023-12-24 16:32:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 16:32:19,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:19,578 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:19,602 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 [2023-12-24 16:32:19,786 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 [2023-12-24 16:32:19,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:19,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash 149101316, now seen corresponding path program 1 times [2023-12-24 16:32:19,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:19,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312642113] [2023-12-24 16:32:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:19,788 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 [2023-12-24 16:32:19,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:19,789 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) [2023-12-24 16:32:19,791 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 [2023-12-24 16:32:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:20,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 16:32:20,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:22,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:32:23,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 16:32:23,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 16:32:23,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:32:23,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-24 16:32:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 18 proven. 282 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:32:23,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:25,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312642113] [2023-12-24 16:32:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312642113] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:25,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:25,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [35] total 41 [2023-12-24 16:32:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692607961] [2023-12-24 16:32:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:32:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:32:25,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1509, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 16:32:25,250 INFO L87 Difference]: Start difference. First operand 196 states and 283 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:26,633 INFO L93 Difference]: Finished difference Result 448 states and 643 transitions. [2023-12-24 16:32:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:32:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2023-12-24 16:32:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:26,634 INFO L225 Difference]: With dead ends: 448 [2023-12-24 16:32:26,634 INFO L226 Difference]: Without dead ends: 253 [2023-12-24 16:32:26,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 16:32:26,635 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 164 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:26,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 809 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 16:32:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-24 16:32:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 198. [2023-12-24 16:32:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 179 states have (on average 1.4134078212290502) internal successors, (253), 179 states have internal predecessors, (253), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 285 transitions. [2023-12-24 16:32:26,639 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 285 transitions. Word has length 125 [2023-12-24 16:32:26,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:26,639 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 285 transitions. [2023-12-24 16:32:26,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 285 transitions. [2023-12-24 16:32:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 16:32:26,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:26,640 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:26,649 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 (17)] Ended with exit code 0 [2023-12-24 16:32:26,849 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 [2023-12-24 16:32:26,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:26,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1640577280, now seen corresponding path program 1 times [2023-12-24 16:32:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446932854] [2023-12-24 16:32:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:26,851 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 [2023-12-24 16:32:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:26,852 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) [2023-12-24 16:32:26,853 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 [2023-12-24 16:32:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:27,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-24 16:32:27,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:29,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:32:30,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:32:30,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-24 16:32:30,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:32:31,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 68 [2023-12-24 16:32:31,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 71 [2023-12-24 16:32:31,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2023-12-24 16:32:31,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 71 [2023-12-24 16:32:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 338 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-24 16:32:31,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:32,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-12-24 16:32:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:35,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446932854] [2023-12-24 16:32:35,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446932854] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:35,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:35,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [39] total 49 [2023-12-24 16:32:35,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879975539] [2023-12-24 16:32:35,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:35,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 16:32:35,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 16:32:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2165, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 16:32:35,184 INFO L87 Difference]: Start difference. First operand 198 states and 285 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:43,686 INFO L93 Difference]: Finished difference Result 521 states and 749 transitions. [2023-12-24 16:32:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 16:32:43,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2023-12-24 16:32:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:43,690 INFO L225 Difference]: With dead ends: 521 [2023-12-24 16:32:43,690 INFO L226 Difference]: Without dead ends: 324 [2023-12-24 16:32:43,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=267, Invalid=2925, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 16:32:43,692 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 285 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:43,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1809 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-24 16:32:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-24 16:32:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 214. [2023-12-24 16:32:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 195 states have (on average 1.4256410256410257) internal successors, (278), 195 states have internal predecessors, (278), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 310 transitions. [2023-12-24 16:32:43,699 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 310 transitions. Word has length 125 [2023-12-24 16:32:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:43,699 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 310 transitions. [2023-12-24 16:32:43,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 310 transitions. [2023-12-24 16:32:43,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-24 16:32:43,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:43,701 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:43,712 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 [2023-12-24 16:32:43,907 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 [2023-12-24 16:32:43,907 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:43,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1053771266, now seen corresponding path program 1 times [2023-12-24 16:32:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30573987] [2023-12-24 16:32:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:43,908 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 [2023-12-24 16:32:43,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:43,909 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) [2023-12-24 16:32:43,911 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 [2023-12-24 16:32:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:44,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 16:32:44,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:46,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-12-24 16:32:47,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 16:32:47,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 16:32:47,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:32:47,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-24 16:32:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 24 proven. 338 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-12-24 16:32:47,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:49,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:49,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30573987] [2023-12-24 16:32:49,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30573987] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:49,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:49,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [35] total 41 [2023-12-24 16:32:49,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060956223] [2023-12-24 16:32:49,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:49,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 16:32:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 16:32:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1509, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 16:32:49,673 INFO L87 Difference]: Start difference. First operand 214 states and 310 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:51,346 INFO L93 Difference]: Finished difference Result 484 states and 696 transitions. [2023-12-24 16:32:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:32:51,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2023-12-24 16:32:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:51,347 INFO L225 Difference]: With dead ends: 484 [2023-12-24 16:32:51,347 INFO L226 Difference]: Without dead ends: 271 [2023-12-24 16:32:51,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 16:32:51,348 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 155 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:51,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1053 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 16:32:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-24 16:32:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 196. [2023-12-24 16:32:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 177 states have (on average 1.4124293785310735) internal successors, (250), 177 states have internal predecessors, (250), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 282 transitions. [2023-12-24 16:32:51,352 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 282 transitions. Word has length 125 [2023-12-24 16:32:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:51,352 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 282 transitions. [2023-12-24 16:32:51,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 282 transitions. [2023-12-24 16:32:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 16:32:51,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:51,353 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:51,378 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 [2023-12-24 16:32:51,560 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 [2023-12-24 16:32:51,561 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:51,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:51,561 INFO L85 PathProgramCache]: Analyzing trace with hash 63880081, now seen corresponding path program 1 times [2023-12-24 16:32:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:51,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248382420] [2023-12-24 16:32:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:51,562 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 [2023-12-24 16:32:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:51,563 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) [2023-12-24 16:32:51,564 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 [2023-12-24 16:32:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:52,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:32:52,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:52,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2023-12-24 16:32:52,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 16:32:52,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-24 16:32:52,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:32:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 16:32:52,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:52,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248382420] [2023-12-24 16:32:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248382420] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:52,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:52,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-24 16:32:52,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937098994] [2023-12-24 16:32:52,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:52,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:32:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:32:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:32:52,907 INFO L87 Difference]: Start difference. First operand 196 states and 282 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:53,405 INFO L93 Difference]: Finished difference Result 413 states and 593 transitions. [2023-12-24 16:32:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:32:53,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-24 16:32:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:53,406 INFO L225 Difference]: With dead ends: 413 [2023-12-24 16:32:53,406 INFO L226 Difference]: Without dead ends: 218 [2023-12-24 16:32:53,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:32:53,407 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 136 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:53,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 373 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 16:32:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-24 16:32:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 196. [2023-12-24 16:32:53,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 177 states have (on average 1.4067796610169492) internal successors, (249), 177 states have internal predecessors, (249), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 281 transitions. [2023-12-24 16:32:53,411 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 281 transitions. Word has length 126 [2023-12-24 16:32:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:53,412 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 281 transitions. [2023-12-24 16:32:53,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 281 transitions. [2023-12-24 16:32:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 16:32:53,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:53,413 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:53,421 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 (20)] Ended with exit code 0 [2023-12-24 16:32:53,621 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 [2023-12-24 16:32:53,621 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:53,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash 585709611, now seen corresponding path program 1 times [2023-12-24 16:32:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691834806] [2023-12-24 16:32:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:53,622 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 [2023-12-24 16:32:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:53,623 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) [2023-12-24 16:32:53,642 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 [2023-12-24 16:32:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:53,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 16:32:53,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:54,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-12-24 16:32:54,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-24 16:32:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 14 proven. 102 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:32:54,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:54,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691834806] [2023-12-24 16:32:54,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691834806] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:54,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:54,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-24 16:32:54,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359362854] [2023-12-24 16:32:54,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:54,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:32:54,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:54,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:32:54,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:32:54,701 INFO L87 Difference]: Start difference. First operand 196 states and 281 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:55,014 INFO L93 Difference]: Finished difference Result 449 states and 643 transitions. [2023-12-24 16:32:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 16:32:55,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-24 16:32:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:55,015 INFO L225 Difference]: With dead ends: 449 [2023-12-24 16:32:55,015 INFO L226 Difference]: Without dead ends: 254 [2023-12-24 16:32:55,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:32:55,016 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 99 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:55,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 646 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:32:55,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-24 16:32:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 196. [2023-12-24 16:32:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 177 states have (on average 1.3954802259887005) internal successors, (247), 177 states have internal predecessors, (247), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 279 transitions. [2023-12-24 16:32:55,020 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 279 transitions. Word has length 126 [2023-12-24 16:32:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:55,021 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 279 transitions. [2023-12-24 16:32:55,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:55,021 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 279 transitions. [2023-12-24 16:32:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 16:32:55,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:55,021 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:55,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-24 16:32:55,230 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 [2023-12-24 16:32:55,231 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:55,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1545246905, now seen corresponding path program 1 times [2023-12-24 16:32:55,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:55,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508728531] [2023-12-24 16:32:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:32:55,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:55,233 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) [2023-12-24 16:32:55,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 16:32:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:55,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 16:32:55,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:56,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2023-12-24 16:32:56,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-24 16:32:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 14 proven. 102 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-24 16:32:56,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:56,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508728531] [2023-12-24 16:32:56,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508728531] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:56,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:56,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-24 16:32:56,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157534021] [2023-12-24 16:32:56,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:56,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:32:56,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:56,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:32:56,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 16:32:56,316 INFO L87 Difference]: Start difference. First operand 196 states and 279 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:56,597 INFO L93 Difference]: Finished difference Result 416 states and 591 transitions. [2023-12-24 16:32:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:32:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-24 16:32:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:56,599 INFO L225 Difference]: With dead ends: 416 [2023-12-24 16:32:56,599 INFO L226 Difference]: Without dead ends: 221 [2023-12-24 16:32:56,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-24 16:32:56,600 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 140 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:56,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 384 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:32:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-24 16:32:56,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 196. [2023-12-24 16:32:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 177 states have (on average 1.384180790960452) internal successors, (245), 177 states have internal predecessors, (245), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 277 transitions. [2023-12-24 16:32:56,607 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 277 transitions. Word has length 127 [2023-12-24 16:32:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:56,607 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 277 transitions. [2023-12-24 16:32:56,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 277 transitions. [2023-12-24 16:32:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-24 16:32:56,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:56,608 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:56,618 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 [2023-12-24 16:32:56,818 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 [2023-12-24 16:32:56,819 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:56,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:56,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1486861238, now seen corresponding path program 1 times [2023-12-24 16:32:56,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:56,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13842186] [2023-12-24 16:32:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:56,820 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 [2023-12-24 16:32:56,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:56,821 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) [2023-12-24 16:32:56,847 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 [2023-12-24 16:32:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:57,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 16:32:57,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:57,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2023-12-24 16:32:57,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-12-24 16:32:57,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:32:57,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 16:32:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 16:32:57,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:57,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13842186] [2023-12-24 16:32:57,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13842186] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:57,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:57,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-24 16:32:57,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528836618] [2023-12-24 16:32:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:57,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 16:32:57,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 16:32:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-24 16:32:57,909 INFO L87 Difference]: Start difference. First operand 196 states and 277 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:58,232 INFO L93 Difference]: Finished difference Result 397 states and 559 transitions. [2023-12-24 16:32:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:32:58,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-24 16:32:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:58,235 INFO L225 Difference]: With dead ends: 397 [2023-12-24 16:32:58,235 INFO L226 Difference]: Without dead ends: 202 [2023-12-24 16:32:58,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:32:58,236 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 38 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:58,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 383 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:32:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-24 16:32:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2023-12-24 16:32:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 177 states have (on average 1.3785310734463276) internal successors, (244), 177 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 276 transitions. [2023-12-24 16:32:58,240 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 276 transitions. Word has length 127 [2023-12-24 16:32:58,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:58,240 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 276 transitions. [2023-12-24 16:32:58,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 276 transitions. [2023-12-24 16:32:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 16:32:58,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:58,241 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:58,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 16:32:58,441 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 [2023-12-24 16:32:58,442 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:58,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash -538092740, now seen corresponding path program 1 times [2023-12-24 16:32:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166478969] [2023-12-24 16:32:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:58,443 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 [2023-12-24 16:32:58,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:58,444 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) [2023-12-24 16:32:58,445 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 [2023-12-24 16:32:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:32:58,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 16:32:58,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:32:58,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:32:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 16:32:58,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:32:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:32:59,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:32:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166478969] [2023-12-24 16:32:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166478969] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:32:59,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:32:59,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2023-12-24 16:32:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547648218] [2023-12-24 16:32:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:32:59,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:32:59,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:32:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:32:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-24 16:32:59,071 INFO L87 Difference]: Start difference. First operand 196 states and 276 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:59,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:32:59,362 INFO L93 Difference]: Finished difference Result 259 states and 353 transitions. [2023-12-24 16:32:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 16:32:59,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2023-12-24 16:32:59,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:32:59,363 INFO L225 Difference]: With dead ends: 259 [2023-12-24 16:32:59,363 INFO L226 Difference]: Without dead ends: 257 [2023-12-24 16:32:59,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:32:59,364 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 103 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:32:59,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 977 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 16:32:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-24 16:32:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 223. [2023-12-24 16:32:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 204 states have (on average 1.3480392156862746) internal successors, (275), 204 states have internal predecessors, (275), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-24 16:32:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 307 transitions. [2023-12-24 16:32:59,367 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 307 transitions. Word has length 128 [2023-12-24 16:32:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:32:59,368 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 307 transitions. [2023-12-24 16:32:59,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:32:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 307 transitions. [2023-12-24 16:32:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:32:59,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:32:59,368 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:32:59,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 16:32:59,569 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 [2023-12-24 16:32:59,569 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:32:59,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:32:59,569 INFO L85 PathProgramCache]: Analyzing trace with hash -480407997, now seen corresponding path program 1 times [2023-12-24 16:32:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:32:59,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175423959] [2023-12-24 16:32:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:32:59,570 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 [2023-12-24 16:32:59,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:32:59,571 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) [2023-12-24 16:32:59,573 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 [2023-12-24 16:33:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:33:00,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 16:33:00,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:33:00,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:33:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-24 16:33:00,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:33:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:33:00,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:33:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175423959] [2023-12-24 16:33:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175423959] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 16:33:00,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 16:33:00,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2023-12-24 16:33:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372887802] [2023-12-24 16:33:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:33:00,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:33:00,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:33:00,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:33:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-24 16:33:00,252 INFO L87 Difference]: Start difference. First operand 223 states and 307 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:33:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:33:00,426 INFO L93 Difference]: Finished difference Result 585 states and 802 transitions. [2023-12-24 16:33:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:33:00,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 130 [2023-12-24 16:33:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:33:00,427 INFO L225 Difference]: With dead ends: 585 [2023-12-24 16:33:00,427 INFO L226 Difference]: Without dead ends: 363 [2023-12-24 16:33:00,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-24 16:33:00,428 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 216 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:33:00,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1110 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:33:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-24 16:33:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 338. [2023-12-24 16:33:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 316 states have (on average 1.3417721518987342) internal successors, (424), 317 states have internal predecessors, (424), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 16:33:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 460 transitions. [2023-12-24 16:33:00,434 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 460 transitions. Word has length 130 [2023-12-24 16:33:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:33:00,435 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 460 transitions. [2023-12-24 16:33:00,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:33:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 460 transitions. [2023-12-24 16:33:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:33:00,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:33:00,436 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:33:00,448 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 [2023-12-24 16:33:00,648 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 [2023-12-24 16:33:00,649 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:33:00,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:33:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1289754623, now seen corresponding path program 1 times [2023-12-24 16:33:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:33:00,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447033986] [2023-12-24 16:33:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:33:00,650 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 [2023-12-24 16:33:00,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:33:00,651 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) [2023-12-24 16:33:00,692 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 [2023-12-24 16:33:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:33:01,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 16:33:01,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:33:05,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2023-12-24 16:33:05,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 44 [2023-12-24 16:33:07,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:33:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:33:09,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:33:27,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:33:27,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 88 [2023-12-24 16:33:44,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:33:44,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447033986] [2023-12-24 16:33:44,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447033986] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:33:44,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [332936427] [2023-12-24 16:33:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:33:44,029 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:33:44,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:33:44,069 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:33:44,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-24 16:33:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:33:45,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 16:33:45,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:33:49,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:33:53,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:33:58,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:34:12,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:34:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:34:17,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:35:31,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2023-12-24 16:35:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [332936427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:35:38,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:35:38,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2023-12-24 16:35:38,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159151093] [2023-12-24 16:35:38,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:35:38,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 16:35:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:35:38,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 16:35:38,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2184, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 16:35:38,554 INFO L87 Difference]: Start difference. First operand 338 states and 460 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 32 states have internal predecessors, (107), 8 states have call successors, (32), 8 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-24 16:36:16,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:36:23,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:36:23,052 INFO L93 Difference]: Finished difference Result 1553 states and 2113 transitions. [2023-12-24 16:36:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 16:36:23,053 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 32 states have internal predecessors, (107), 8 states have call successors, (32), 8 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 130 [2023-12-24 16:36:23,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:36:23,056 INFO L225 Difference]: With dead ends: 1553 [2023-12-24 16:36:23,056 INFO L226 Difference]: Without dead ends: 1216 [2023-12-24 16:36:23,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 147.8s TimeCoverageRelationStatistics Valid=585, Invalid=3837, Unknown=0, NotChecked=0, Total=4422 [2023-12-24 16:36:23,058 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1575 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-24 16:36:23,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 2680 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-12-24 16:36:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-12-24 16:36:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1195. [2023-12-24 16:36:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1116 states have (on average 1.3369175627240144) internal successors, (1492), 1122 states have internal predecessors, (1492), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 61 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:36:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1626 transitions. [2023-12-24 16:36:23,099 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1626 transitions. Word has length 130 [2023-12-24 16:36:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:36:23,099 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1626 transitions. [2023-12-24 16:36:23,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 32 states have internal predecessors, (107), 8 states have call successors, (32), 8 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-24 16:36:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1626 transitions. [2023-12-24 16:36:23,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:36:23,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:36:23,101 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:36:23,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-12-24 16:36:23,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 16:36:23,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-24 16:36:23,511 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:36:23,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:36:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1820414593, now seen corresponding path program 1 times [2023-12-24 16:36:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:36:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845509367] [2023-12-24 16:36:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:36:23,512 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 [2023-12-24 16:36:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:36:23,513 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) [2023-12-24 16:36:23,513 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 [2023-12-24 16:36:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:36:24,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 16:36:24,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:36:30,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2023-12-24 16:36:30,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 44 [2023-12-24 16:36:33,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:36:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:36:36,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:37:04,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:37:04,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 88 [2023-12-24 16:37:20,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:37:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845509367] [2023-12-24 16:37:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845509367] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:37:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1710775906] [2023-12-24 16:37:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:37:20,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:37:20,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:37:20,146 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:37:20,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-24 16:37:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:37:21,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 16:37:21,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:37:26,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:37:31,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:37:36,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:37:49,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 88 [2023-12-24 16:37:49,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 64 [2023-12-24 16:37:58,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2023-12-24 16:38:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-24 16:38:00,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:39:33,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2023-12-24 16:39:43,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1710775906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:39:43,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:39:43,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2023-12-24 16:39:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550760247] [2023-12-24 16:39:43,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:39:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 16:39:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:39:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 16:39:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 16:39:43,608 INFO L87 Difference]: Start difference. First operand 1195 states and 1626 transitions. Second operand has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 32 states have internal predecessors, (116), 8 states have call successors, (32), 8 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-24 16:40:46,420 WARN L293 SmtUtils]: Spent 18.84s on a formula simplification. DAG size of input: 125 DAG size of output: 123 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 16:40:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:56,457 INFO L93 Difference]: Finished difference Result 2432 states and 3306 transitions. [2023-12-24 16:40:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 16:40:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 32 states have internal predecessors, (116), 8 states have call successors, (32), 8 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 130 [2023-12-24 16:40:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:56,461 INFO L225 Difference]: With dead ends: 2432 [2023-12-24 16:40:56,461 INFO L226 Difference]: Without dead ends: 1238 [2023-12-24 16:40:56,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 198.0s TimeCoverageRelationStatistics Valid=600, Invalid=3560, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 16:40:56,463 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1347 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:56,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 3391 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time] [2023-12-24 16:40:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2023-12-24 16:40:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1195. [2023-12-24 16:40:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1116 states have (on average 1.331541218637993) internal successors, (1486), 1122 states have internal predecessors, (1486), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 61 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:40:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1620 transitions. [2023-12-24 16:40:56,497 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1620 transitions. Word has length 130 [2023-12-24 16:40:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:56,498 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1620 transitions. [2023-12-24 16:40:56,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 32 states have internal predecessors, (116), 8 states have call successors, (32), 8 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-24 16:40:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1620 transitions. [2023-12-24 16:40:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:40:56,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:56,500 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:56,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-12-24 16:40:56,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:56,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-24 16:40:56,924 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:56,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1011067967, now seen corresponding path program 1 times [2023-12-24 16:40:56,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:56,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898533013] [2023-12-24 16:40:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:56,926 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 [2023-12-24 16:40:56,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:56,927 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) [2023-12-24 16:40:56,928 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 [2023-12-24 16:40:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:57,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 16:40:57,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:57,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-24 16:40:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 16:40:57,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:57,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898533013] [2023-12-24 16:40:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898533013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:57,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:57,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 16:40:57,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450596654] [2023-12-24 16:40:57,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:57,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 16:40:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:57,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 16:40:57,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 16:40:57,549 INFO L87 Difference]: Start difference. First operand 1195 states and 1620 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:40:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:58,075 INFO L93 Difference]: Finished difference Result 2796 states and 3799 transitions. [2023-12-24 16:40:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 16:40:58,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 130 [2023-12-24 16:40:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:58,080 INFO L225 Difference]: With dead ends: 2796 [2023-12-24 16:40:58,080 INFO L226 Difference]: Without dead ends: 1602 [2023-12-24 16:40:58,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 16:40:58,082 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 283 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:58,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1478 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 16:40:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2023-12-24 16:40:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1195. [2023-12-24 16:40:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1116 states have (on average 1.3288530465949822) internal successors, (1483), 1122 states have internal predecessors, (1483), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 61 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:40:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1617 transitions. [2023-12-24 16:40:58,123 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1617 transitions. Word has length 130 [2023-12-24 16:40:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:58,123 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1617 transitions. [2023-12-24 16:40:58,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-24 16:40:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1617 transitions. [2023-12-24 16:40:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:40:58,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:58,125 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:58,149 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 [2023-12-24 16:40:58,334 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 [2023-12-24 16:40:58,334 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:58,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash -610482369, now seen corresponding path program 1 times [2023-12-24 16:40:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066014149] [2023-12-24 16:40:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:58,335 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 [2023-12-24 16:40:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:58,336 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) [2023-12-24 16:40:58,359 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 [2023-12-24 16:40:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:58,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:40:58,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-24 16:40:58,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:58,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066014149] [2023-12-24 16:40:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066014149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:58,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:58,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:40:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903573698] [2023-12-24 16:40:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:58,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:40:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:40:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:40:58,773 INFO L87 Difference]: Start difference. First operand 1195 states and 1617 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:40:58,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:58,899 INFO L93 Difference]: Finished difference Result 2405 states and 3257 transitions. [2023-12-24 16:40:58,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:40:58,900 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2023-12-24 16:40:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:58,903 INFO L225 Difference]: With dead ends: 2405 [2023-12-24 16:40:58,903 INFO L226 Difference]: Without dead ends: 1211 [2023-12-24 16:40:58,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:40:58,905 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 7 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:58,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 453 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:40:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-12-24 16:40:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1199. [2023-12-24 16:40:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1120 states have (on average 1.3267857142857142) internal successors, (1486), 1126 states have internal predecessors, (1486), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 61 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:40:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1620 transitions. [2023-12-24 16:40:58,940 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1620 transitions. Word has length 130 [2023-12-24 16:40:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:58,941 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1620 transitions. [2023-12-24 16:40:58,941 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:40:58,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1620 transitions. [2023-12-24 16:40:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:40:58,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:58,943 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:58,967 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 [2023-12-24 16:40:59,152 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 [2023-12-24 16:40:59,152 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:59,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2037862019, now seen corresponding path program 1 times [2023-12-24 16:40:59,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:59,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813654169] [2023-12-24 16:40:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:59,153 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 [2023-12-24 16:40:59,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:59,154 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) [2023-12-24 16:40:59,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 16:40:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:40:59,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:40:59,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:40:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-24 16:40:59,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:40:59,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:40:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813654169] [2023-12-24 16:40:59,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813654169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:40:59,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:40:59,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:40:59,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471388962] [2023-12-24 16:40:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:40:59,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:40:59,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:40:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:40:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:40:59,573 INFO L87 Difference]: Start difference. First operand 1199 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:40:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:40:59,689 INFO L93 Difference]: Finished difference Result 2407 states and 3254 transitions. [2023-12-24 16:40:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:40:59,689 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2023-12-24 16:40:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:40:59,692 INFO L225 Difference]: With dead ends: 2407 [2023-12-24 16:40:59,692 INFO L226 Difference]: Without dead ends: 1209 [2023-12-24 16:40:59,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:40:59,694 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 7 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:40:59,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 453 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:40:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2023-12-24 16:40:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1201. [2023-12-24 16:40:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1122 states have (on average 1.3253119429590017) internal successors, (1487), 1128 states have internal predecessors, (1487), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 61 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:40:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1621 transitions. [2023-12-24 16:40:59,734 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1621 transitions. Word has length 130 [2023-12-24 16:40:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:40:59,734 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1621 transitions. [2023-12-24 16:40:59,734 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:40:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1621 transitions. [2023-12-24 16:40:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 16:40:59,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:40:59,736 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:40:59,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 16:40:59,948 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 [2023-12-24 16:40:59,948 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:40:59,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:40:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1862710207, now seen corresponding path program 1 times [2023-12-24 16:40:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:40:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648353589] [2023-12-24 16:40:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:40:59,949 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 [2023-12-24 16:40:59,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:40:59,950 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) [2023-12-24 16:40:59,984 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 [2023-12-24 16:41:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:41:00,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 16:41:00,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:41:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 16:41:00,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 16:41:00,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:41:00,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648353589] [2023-12-24 16:41:00,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648353589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 16:41:00,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 16:41:00,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 16:41:00,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992432759] [2023-12-24 16:41:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 16:41:00,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 16:41:00,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:41:00,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 16:41:00,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 16:41:00,390 INFO L87 Difference]: Start difference. First operand 1201 states and 1621 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:41:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:41:00,507 INFO L93 Difference]: Finished difference Result 2405 states and 3247 transitions. [2023-12-24 16:41:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 16:41:00,508 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2023-12-24 16:41:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:41:00,510 INFO L225 Difference]: With dead ends: 2405 [2023-12-24 16:41:00,511 INFO L226 Difference]: Without dead ends: 1205 [2023-12-24 16:41:00,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 16:41:00,512 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 7 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 16:41:00,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 453 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 16:41:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-12-24 16:41:00,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1201. [2023-12-24 16:41:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1122 states have (on average 1.3244206773618539) internal successors, (1486), 1128 states have internal predecessors, (1486), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 61 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 16:41:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1620 transitions. [2023-12-24 16:41:00,549 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1620 transitions. Word has length 130 [2023-12-24 16:41:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:41:00,549 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1620 transitions. [2023-12-24 16:41:00,549 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-24 16:41:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1620 transitions. [2023-12-24 16:41:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 16:41:00,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:41:00,551 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:41:00,576 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 [2023-12-24 16:41:00,779 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 [2023-12-24 16:41:00,780 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:41:00,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:41:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash 551033838, now seen corresponding path program 1 times [2023-12-24 16:41:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:41:00,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444891236] [2023-12-24 16:41:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:41:00,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:41:00,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:41:00,782 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) [2023-12-24 16:41:00,782 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 [2023-12-24 16:41:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:41:01,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 16:41:01,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:41:13,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:41:14,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2023-12-24 16:41:14,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-12-24 16:41:14,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-24 16:41:15,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:41:15,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:41:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 16 proven. 423 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-24 16:41:15,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:41:30,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:41:30,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-12-24 16:41:34,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:41:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444891236] [2023-12-24 16:41:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444891236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:41:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [606006995] [2023-12-24 16:41:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:41:34,823 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:41:34,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:41:34,824 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:41:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-24 16:41:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:41:35,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 16:41:35,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:41:36,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:41:40,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:41:50,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:41:55,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:42:00,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-12-24 16:42:05,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-24 16:42:10,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2023-12-24 16:42:10,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-24 16:42:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 288 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-24 16:42:12,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:42:20,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2023-12-24 16:42:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [606006995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:42:26,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 16:42:26,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 25] total 64 [2023-12-24 16:42:26,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017045070] [2023-12-24 16:42:26,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 16:42:26,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-24 16:42:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 16:42:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-24 16:42:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=5838, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 16:42:26,316 INFO L87 Difference]: Start difference. First operand 1201 states and 1620 transitions. Second operand has 65 states, 54 states have (on average 2.6481481481481484) internal successors, (143), 51 states have internal predecessors, (143), 19 states have call successors, (32), 18 states have call predecessors, (32), 19 states have return successors, (32), 11 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-24 16:43:12,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:43:23,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:43:27,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:43:40,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:43:44,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 16:43:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 16:43:50,419 INFO L93 Difference]: Finished difference Result 2525 states and 3247 transitions. [2023-12-24 16:43:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-24 16:43:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 54 states have (on average 2.6481481481481484) internal successors, (143), 51 states have internal predecessors, (143), 19 states have call successors, (32), 18 states have call predecessors, (32), 19 states have return successors, (32), 11 states have call predecessors, (32), 19 states have call successors, (32) Word has length 132 [2023-12-24 16:43:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 16:43:50,424 INFO L225 Difference]: With dead ends: 2525 [2023-12-24 16:43:50,424 INFO L226 Difference]: Without dead ends: 1325 [2023-12-24 16:43:50,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3715 ImplicationChecksByTransitivity, 109.5s TimeCoverageRelationStatistics Valid=1971, Invalid=14282, Unknown=3, NotChecked=0, Total=16256 [2023-12-24 16:43:50,427 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 2099 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 269 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 3833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2023-12-24 16:43:50,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2099 Valid, 2604 Invalid, 3833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [269 Valid, 3559 Invalid, 5 Unknown, 0 Unchecked, 36.5s Time] [2023-12-24 16:43:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-12-24 16:43:50,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 329. [2023-12-24 16:43:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 280 states have (on average 1.1964285714285714) internal successors, (335), 282 states have internal predecessors, (335), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-24 16:43:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 401 transitions. [2023-12-24 16:43:50,490 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 401 transitions. Word has length 132 [2023-12-24 16:43:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 16:43:50,490 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 401 transitions. [2023-12-24 16:43:50,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 54 states have (on average 2.6481481481481484) internal successors, (143), 51 states have internal predecessors, (143), 19 states have call successors, (32), 18 states have call predecessors, (32), 19 states have return successors, (32), 11 states have call predecessors, (32), 19 states have call successors, (32) [2023-12-24 16:43:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 401 transitions. [2023-12-24 16:43:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 16:43:50,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 16:43:50,491 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 16:43:50,503 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 [2023-12-24 16:43:50,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2023-12-24 16:43:50,902 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=3,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 16:43:50,902 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 16:43:50,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 16:43:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash 670206254, now seen corresponding path program 1 times [2023-12-24 16:43:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 16:43:50,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748008660] [2023-12-24 16:43:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:43:50,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 16:43:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 16:43:50,904 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) [2023-12-24 16:43:50,907 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 (36)] Waiting until timeout for monitored process [2023-12-24 16:43:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:43:51,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-24 16:43:51,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:44:03,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:44:04,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-24 16:44:04,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:44:04,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 16:44:04,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 16:44:04,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 16:44:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 16 proven. 423 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-24 16:44:05,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 16:44:18,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 16:44:18,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-12-24 16:44:23,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 16:44:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748008660] [2023-12-24 16:44:23,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748008660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 16:44:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976909969] [2023-12-24 16:44:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 16:44:23,384 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 16:44:23,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 16:44:23,385 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 16:44:23,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-12-24 16:44:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 16:44:24,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 16:44:24,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 16:44:25,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:44:29,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 16:44:37,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 16:44:43,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 Received shutdown request... [2023-12-24 16:44:44,129 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:44:44,138 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:44:44,145 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 16:44:44,160 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 16:44:44,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2023-12-24 16:44:44,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 16:44:44,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-24 16:44:44,561 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 133 with TraceHistMax 16,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 67 known predicates. [2023-12-24 16:44:44,565 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-24 16:44:44,566 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 16:44:44,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 04:44:44 BoogieIcfgContainer [2023-12-24 16:44:44,571 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 16:44:44,571 INFO L158 Benchmark]: Toolchain (without parser) took 875333.57ms. Allocated memory was 253.8MB in the beginning and 305.1MB in the end (delta: 51.4MB). Free memory was 213.4MB in the beginning and 193.4MB in the end (delta: 20.0MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. [2023-12-24 16:44:44,571 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 166.7MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:44:44,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.67ms. Allocated memory is still 253.8MB. Free memory was 212.9MB in the beginning and 197.0MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 16:44:44,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.57ms. Allocated memory is still 253.8MB. Free memory was 197.0MB in the beginning and 193.5MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 16:44:44,572 INFO L158 Benchmark]: Boogie Preprocessor took 74.10ms. Allocated memory is still 253.8MB. Free memory was 193.5MB in the beginning and 186.1MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-24 16:44:44,574 INFO L158 Benchmark]: RCFGBuilder took 1381.81ms. Allocated memory is still 253.8MB. Free memory was 186.1MB in the beginning and 131.1MB in the end (delta: 55.1MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2023-12-24 16:44:44,574 INFO L158 Benchmark]: TraceAbstraction took 873529.71ms. Allocated memory was 253.8MB in the beginning and 305.1MB in the end (delta: 51.4MB). Free memory was 130.0MB in the beginning and 193.4MB in the end (delta: -63.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 16:44:44,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 166.7MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 291.67ms. Allocated memory is still 253.8MB. Free memory was 212.9MB in the beginning and 197.0MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.57ms. Allocated memory is still 253.8MB. Free memory was 197.0MB in the beginning and 193.5MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.10ms. Allocated memory is still 253.8MB. Free memory was 193.5MB in the beginning and 186.1MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1381.81ms. Allocated memory is still 253.8MB. Free memory was 186.1MB in the beginning and 131.1MB in the end (delta: 55.1MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. * TraceAbstraction took 873529.71ms. Allocated memory was 253.8MB in the beginning and 305.1MB in the end (delta: 51.4MB). Free memory was 130.0MB in the beginning and 193.4MB in the end (delta: -63.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 133 with TraceHistMax 16,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 67 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 873.5s, OverallIterations: 32, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 252.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 10218 SdHoareTripleChecker+Valid, 114.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10213 mSDsluCounter, 33317 SdHoareTripleChecker+Invalid, 106.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28165 mSDsCounter, 1053 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17808 IncrementalHoareTripleChecker+Invalid, 18866 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1053 mSolverCounterUnsat, 5152 mSDtfsCounter, 17808 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7475 GetRequests, 6359 SyntacticMatches, 1 SemanticMatches, 1115 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 19904 ImplicationChecksByTransitivity, 530.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1201occurred in iteration=29, InterpolantAutomatonStates: 348, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 31 MinimizatonAttempts, 3100 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 9.5s SatisfiabilityAnalysisTime, 543.9s InterpolantComputationTime, 4282 NumberOfCodeBlocks, 4282 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 6958 ConstructedInterpolants, 200 QuantifiedInterpolants, 172765 SizeOfPredicates, 966 NumberOfNonLiveVariables, 11198 ConjunctsInSsa, 1150 ConjunctsInUnsatCore, 56 InterpolantComputations, 28 PerfectInterpolantSequences, 18709/26880 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown