/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-ap_file-85.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 15:42:57,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 15:42:58,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 15:42:58,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 15:42:58,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 15:42:58,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 15:42:58,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 15:42:58,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 15:42:58,057 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 15:42:58,057 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 15:42:58,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 15:42:58,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 15:42:58,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 15:42:58,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 15:42:58,058 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 15:42:58,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 15:42:58,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 15:42:58,059 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 15:42:58,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 15:42:58,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 15:42:58,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 15:42:58,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 15:42:58,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 15:42:58,062 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 15:42:58,062 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 15:42:58,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 15:42:58,063 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 15:42:58,063 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 15:42:58,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 15:42:58,063 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 15:42:58,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 15:42:58,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 15:42:58,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 15:42:58,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 15:42:58,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:42:58,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 15:42:58,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 15:42:58,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 15:42:58,066 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 15:42:58,066 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 15:42:58,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 15:42:58,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 15:42:58,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 15:42:58,255 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 15:42:58,256 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 15:42:58,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i [2023-12-16 15:42:59,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 15:42:59,606 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 15:42:59,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i [2023-12-16 15:42:59,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544bad0ec/9cbc4dd702a049de9a3d6f6212a5370a/FLAG477d2fdd3 [2023-12-16 15:42:59,623 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544bad0ec/9cbc4dd702a049de9a3d6f6212a5370a [2023-12-16 15:42:59,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 15:42:59,626 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 15:42:59,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 15:42:59,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 15:42:59,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 15:42:59,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:59" (1/1) ... [2023-12-16 15:42:59,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d566221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:59, skipping insertion in model container [2023-12-16 15:42:59,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:59" (1/1) ... [2023-12-16 15:42:59,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 15:42:59,879 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-ap_file-85.i[917,930] [2023-12-16 15:42:59,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:43:00,029 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 15:43:00,041 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-ap_file-85.i[917,930] [2023-12-16 15:43:00,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:43:00,088 INFO L206 MainTranslator]: Completed translation [2023-12-16 15:43:00,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00 WrapperNode [2023-12-16 15:43:00,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 15:43:00,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 15:43:00,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 15:43:00,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 15:43:00,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,129 INFO L138 Inliner]: procedures = 33, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 535 [2023-12-16 15:43:00,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 15:43:00,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 15:43:00,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 15:43:00,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 15:43:00,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,167 INFO L175 MemorySlicer]: Split 139 memory accesses to 6 slices as follows [2, 69, 25, 7, 29, 7]. 50 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 10, 3, 1, 2, 1]. The 22 writes are split as follows [0, 12, 4, 3, 2, 1]. [2023-12-16 15:43:00,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 15:43:00,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 15:43:00,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 15:43:00,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 15:43:00,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (1/1) ... [2023-12-16 15:43:00,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:43:00,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 15:43:00,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 15:43:00,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 15:43:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 15:43:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-16 15:43:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-16 15:43:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-16 15:43:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-16 15:43:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-16 15:43:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-16 15:43:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 15:43:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 15:43:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-16 15:43:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 15:43:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 15:43:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 15:43:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-16 15:43:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-16 15:43:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-16 15:43:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 15:43:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 15:43:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-16 15:43:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-16 15:43:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-16 15:43:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 15:43:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 15:43:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 15:43:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 15:43:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 15:43:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-16 15:43:00,438 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 15:43:00,440 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 15:43:01,047 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 15:43:01,106 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 15:43:01,106 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 15:43:01,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:43:01 BoogieIcfgContainer [2023-12-16 15:43:01,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 15:43:01,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 15:43:01,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 15:43:01,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 15:43:01,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:42:59" (1/3) ... [2023-12-16 15:43:01,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc34766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:43:01, skipping insertion in model container [2023-12-16 15:43:01,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:43:00" (2/3) ... [2023-12-16 15:43:01,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc34766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:43:01, skipping insertion in model container [2023-12-16 15:43:01,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:43:01" (3/3) ... [2023-12-16 15:43:01,113 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-85.i [2023-12-16 15:43:01,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 15:43:01,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 15:43:01,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 15:43:01,166 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;@279e06e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 15:43:01,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 15:43:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 99 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 15:43:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 15:43:01,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:01,181 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:01,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:01,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1189087437, now seen corresponding path program 1 times [2023-12-16 15:43:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111140959] [2023-12-16 15:43:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:01,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:01,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:01,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 15:43:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:01,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 15:43:01,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-16 15:43:01,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:01,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111140959] [2023-12-16 15:43:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111140959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:01,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:01,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 15:43:01,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151169046] [2023-12-16 15:43:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:01,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 15:43:01,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:01,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 15:43:01,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:43:01,570 INFO L87 Difference]: Start difference. First operand has 124 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 99 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-16 15:43:01,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:01,616 INFO L93 Difference]: Finished difference Result 245 states and 389 transitions. [2023-12-16 15:43:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:43:01,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 174 [2023-12-16 15:43:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:01,625 INFO L225 Difference]: With dead ends: 245 [2023-12-16 15:43:01,626 INFO L226 Difference]: Without dead ends: 122 [2023-12-16 15:43:01,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:43:01,631 INFO L413 NwaCegarLoop]: 175 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, 175 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 [2023-12-16 15:43:01,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:43:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-16 15:43:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-16 15:43:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 97 states have (on average 1.3711340206185567) internal successors, (133), 97 states have internal predecessors, (133), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 15:43:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 179 transitions. [2023-12-16 15:43:01,663 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 179 transitions. Word has length 174 [2023-12-16 15:43:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:01,663 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 179 transitions. [2023-12-16 15:43:01,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-16 15:43:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 179 transitions. [2023-12-16 15:43:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 15:43:01,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:01,667 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:01,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:01,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:01,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:01,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1729199905, now seen corresponding path program 1 times [2023-12-16 15:43:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126700078] [2023-12-16 15:43:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:01,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:01,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:01,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:01,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 15:43:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:02,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 15:43:02,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:02,195 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 [2023-12-16 15:43:02,242 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 19 treesize of output 15 [2023-12-16 15:43:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:02,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:02,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:02,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126700078] [2023-12-16 15:43:02,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126700078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:02,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:02,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 15:43:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026340520] [2023-12-16 15:43:02,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:02,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 15:43:02,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:02,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 15:43:02,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:43:02,326 INFO L87 Difference]: Start difference. First operand 122 states and 179 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:02,969 INFO L93 Difference]: Finished difference Result 470 states and 687 transitions. [2023-12-16 15:43:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 15:43:02,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2023-12-16 15:43:02,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:02,973 INFO L225 Difference]: With dead ends: 470 [2023-12-16 15:43:02,974 INFO L226 Difference]: Without dead ends: 349 [2023-12-16 15:43:02,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:43:02,977 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 492 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:02,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1426 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 15:43:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-16 15:43:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 232. [2023-12-16 15:43:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 188 states have (on average 1.377659574468085) internal successors, (259), 189 states have internal predecessors, (259), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 15:43:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 341 transitions. [2023-12-16 15:43:03,016 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 341 transitions. Word has length 174 [2023-12-16 15:43:03,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:03,017 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 341 transitions. [2023-12-16 15:43:03,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 341 transitions. [2023-12-16 15:43:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 15:43:03,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:03,020 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:03,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:03,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:03,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:03,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1285903713, now seen corresponding path program 1 times [2023-12-16 15:43:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:03,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614741379] [2023-12-16 15:43:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:03,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:03,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:03,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:03,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 15:43:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:03,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:43:03,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:03,498 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 18 treesize of output 10 [2023-12-16 15:43:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:03,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:03,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:03,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614741379] [2023-12-16 15:43:03,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614741379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:03,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:03,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:43:03,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891958581] [2023-12-16 15:43:03,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:03,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:43:03,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:43:03,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:43:03,517 INFO L87 Difference]: Start difference. First operand 232 states and 341 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:04,650 INFO L93 Difference]: Finished difference Result 683 states and 1007 transitions. [2023-12-16 15:43:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:43:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2023-12-16 15:43:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:04,654 INFO L225 Difference]: With dead ends: 683 [2023-12-16 15:43:04,654 INFO L226 Difference]: Without dead ends: 452 [2023-12-16 15:43:04,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:43:04,656 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 135 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:04,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 702 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 15:43:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-16 15:43:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 235. [2023-12-16 15:43:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 191 states have (on average 1.3717277486910995) internal successors, (262), 192 states have internal predecessors, (262), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 15:43:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 344 transitions. [2023-12-16 15:43:04,672 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 344 transitions. Word has length 174 [2023-12-16 15:43:04,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:04,672 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 344 transitions. [2023-12-16 15:43:04,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 344 transitions. [2023-12-16 15:43:04,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 15:43:04,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:04,674 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:04,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:04,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:04,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:04,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1857363672, now seen corresponding path program 1 times [2023-12-16 15:43:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282602054] [2023-12-16 15:43:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:04,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:04,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:04,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:04,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 15:43:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:05,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:43:05,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:05,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:05,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:05,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282602054] [2023-12-16 15:43:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282602054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:05,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:05,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:43:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697751469] [2023-12-16 15:43:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:05,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:43:05,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:43:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:43:05,102 INFO L87 Difference]: Start difference. First operand 235 states and 344 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:05,364 INFO L93 Difference]: Finished difference Result 621 states and 912 transitions. [2023-12-16 15:43:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:43:05,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2023-12-16 15:43:05,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:05,367 INFO L225 Difference]: With dead ends: 621 [2023-12-16 15:43:05,367 INFO L226 Difference]: Without dead ends: 387 [2023-12-16 15:43:05,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:43:05,368 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 168 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:05,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 590 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:43:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-16 15:43:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 239. [2023-12-16 15:43:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 195 states have (on average 1.353846153846154) internal successors, (264), 196 states have internal predecessors, (264), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 15:43:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 346 transitions. [2023-12-16 15:43:05,408 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 346 transitions. Word has length 174 [2023-12-16 15:43:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:05,409 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 346 transitions. [2023-12-16 15:43:05,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 346 transitions. [2023-12-16 15:43:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 15:43:05,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:05,411 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:05,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:05,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:05,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:05,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 571622685, now seen corresponding path program 1 times [2023-12-16 15:43:05,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:05,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909907931] [2023-12-16 15:43:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:05,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:05,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:05,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:05,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 15:43:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:05,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:43:05,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:05,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:05,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909907931] [2023-12-16 15:43:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909907931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:05,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:05,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:43:05,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140345079] [2023-12-16 15:43:05,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:05,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:43:05,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:05,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:43:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:43:05,902 INFO L87 Difference]: Start difference. First operand 239 states and 346 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:06,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:06,365 INFO L93 Difference]: Finished difference Result 627 states and 912 transitions. [2023-12-16 15:43:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:43:06,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2023-12-16 15:43:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:06,380 INFO L225 Difference]: With dead ends: 627 [2023-12-16 15:43:06,380 INFO L226 Difference]: Without dead ends: 389 [2023-12-16 15:43:06,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:43:06,382 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 161 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:06,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 653 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:43:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-16 15:43:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 241. [2023-12-16 15:43:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 197 states have (on average 1.350253807106599) internal successors, (266), 198 states have internal predecessors, (266), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 15:43:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 348 transitions. [2023-12-16 15:43:06,397 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 348 transitions. Word has length 174 [2023-12-16 15:43:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:06,397 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 348 transitions. [2023-12-16 15:43:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 348 transitions. [2023-12-16 15:43:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 15:43:06,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:06,399 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:06,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:06,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:06,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:06,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash -708240993, now seen corresponding path program 1 times [2023-12-16 15:43:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:06,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50545131] [2023-12-16 15:43:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:06,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:06,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:06,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:06,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 15:43:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:06,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 15:43:06,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:06,873 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 [2023-12-16 15:43:06,907 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 [2023-12-16 15:43:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:06,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:06,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50545131] [2023-12-16 15:43:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50545131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:06,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 15:43:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805643466] [2023-12-16 15:43:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:06,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 15:43:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 15:43:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:43:06,982 INFO L87 Difference]: Start difference. First operand 241 states and 348 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:07,417 INFO L93 Difference]: Finished difference Result 564 states and 811 transitions. [2023-12-16 15:43:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 15:43:07,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2023-12-16 15:43:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:07,420 INFO L225 Difference]: With dead ends: 564 [2023-12-16 15:43:07,420 INFO L226 Difference]: Without dead ends: 324 [2023-12-16 15:43:07,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-16 15:43:07,421 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 366 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:07,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1820 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:43:07,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-16 15:43:07,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 241. [2023-12-16 15:43:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 197 states have (on average 1.350253807106599) internal successors, (266), 198 states have internal predecessors, (266), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 15:43:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 348 transitions. [2023-12-16 15:43:07,433 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 348 transitions. Word has length 174 [2023-12-16 15:43:07,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:07,433 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 348 transitions. [2023-12-16 15:43:07,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 348 transitions. [2023-12-16 15:43:07,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 15:43:07,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:07,434 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:07,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:07,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:07,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:07,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash 454298374, now seen corresponding path program 1 times [2023-12-16 15:43:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:07,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598925519] [2023-12-16 15:43:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:07,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:07,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:07,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:07,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 15:43:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:07,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:43:07,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:07,931 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 [2023-12-16 15:43:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:07,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:07,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598925519] [2023-12-16 15:43:07,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598925519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:07,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:07,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:43:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711142111] [2023-12-16 15:43:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:07,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:43:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:43:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:43:07,971 INFO L87 Difference]: Start difference. First operand 241 states and 348 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:08,379 INFO L93 Difference]: Finished difference Result 552 states and 798 transitions. [2023-12-16 15:43:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:43:08,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-16 15:43:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:08,381 INFO L225 Difference]: With dead ends: 552 [2023-12-16 15:43:08,381 INFO L226 Difference]: Without dead ends: 312 [2023-12-16 15:43:08,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:43:08,382 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 115 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:08,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 605 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:43:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-16 15:43:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 238. [2023-12-16 15:43:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 194 states have (on average 1.3350515463917525) internal successors, (259), 195 states have internal predecessors, (259), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 15:43:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2023-12-16 15:43:08,395 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 175 [2023-12-16 15:43:08,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:08,396 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2023-12-16 15:43:08,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2023-12-16 15:43:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 15:43:08,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:08,397 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:08,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:08,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:08,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:08,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash 326134607, now seen corresponding path program 1 times [2023-12-16 15:43:08,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:08,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590008261] [2023-12-16 15:43:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:08,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:08,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:08,608 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:08,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 15:43:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:08,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:43:08,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:08,885 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 [2023-12-16 15:43:08,975 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 23 [2023-12-16 15:43:08,978 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 24 treesize of output 16 [2023-12-16 15:43:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:09,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:09,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:09,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590008261] [2023-12-16 15:43:09,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590008261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:09,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:09,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:43:09,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425614014] [2023-12-16 15:43:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:09,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:43:09,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:43:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:43:09,001 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:09,462 INFO L93 Difference]: Finished difference Result 554 states and 790 transitions. [2023-12-16 15:43:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:43:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-16 15:43:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:09,463 INFO L225 Difference]: With dead ends: 554 [2023-12-16 15:43:09,463 INFO L226 Difference]: Without dead ends: 317 [2023-12-16 15:43:09,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:43:09,464 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 297 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:09,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1119 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:43:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-16 15:43:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 311. [2023-12-16 15:43:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 252 states have (on average 1.3293650793650793) internal successors, (335), 254 states have internal predecessors, (335), 55 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-16 15:43:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 445 transitions. [2023-12-16 15:43:09,478 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 445 transitions. Word has length 175 [2023-12-16 15:43:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:09,478 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 445 transitions. [2023-12-16 15:43:09,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 445 transitions. [2023-12-16 15:43:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 15:43:09,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:09,480 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:09,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:09,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:09,686 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:09,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash -953729071, now seen corresponding path program 1 times [2023-12-16 15:43:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:09,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546979940] [2023-12-16 15:43:09,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:09,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:09,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:09,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:09,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 15:43:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:09,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 15:43:09,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:09,931 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 11 treesize of output 9 [2023-12-16 15:43:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:09,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:09,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:09,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546979940] [2023-12-16 15:43:09,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546979940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:09,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:09,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 15:43:09,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910128603] [2023-12-16 15:43:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:09,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 15:43:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 15:43:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:43:09,983 INFO L87 Difference]: Start difference. First operand 311 states and 445 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:10,187 INFO L93 Difference]: Finished difference Result 812 states and 1167 transitions. [2023-12-16 15:43:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 15:43:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-16 15:43:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:10,191 INFO L225 Difference]: With dead ends: 812 [2023-12-16 15:43:10,191 INFO L226 Difference]: Without dead ends: 502 [2023-12-16 15:43:10,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:43:10,192 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 339 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:10,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2208 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:43:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-16 15:43:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 330. [2023-12-16 15:43:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 266 states have (on average 1.3120300751879699) internal successors, (349), 268 states have internal predecessors, (349), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 15:43:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 467 transitions. [2023-12-16 15:43:10,213 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 467 transitions. Word has length 175 [2023-12-16 15:43:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:10,213 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 467 transitions. [2023-12-16 15:43:10,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 467 transitions. [2023-12-16 15:43:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 15:43:10,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:10,231 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:10,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:10,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:10,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:10,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2015078349, now seen corresponding path program 1 times [2023-12-16 15:43:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581380613] [2023-12-16 15:43:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:10,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:10,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:10,434 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:10,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 15:43:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:10,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 15:43:10,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:10,670 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 [2023-12-16 15:43:10,742 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 25 treesize of output 21 [2023-12-16 15:43:10,778 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 [2023-12-16 15:43:10,809 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 [2023-12-16 15:43:10,821 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 31 [2023-12-16 15:43:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:10,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:10,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581380613] [2023-12-16 15:43:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581380613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:10,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:10,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 15:43:10,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078942379] [2023-12-16 15:43:10,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:10,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 15:43:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 15:43:10,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-16 15:43:10,881 INFO L87 Difference]: Start difference. First operand 330 states and 467 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:11,974 INFO L93 Difference]: Finished difference Result 766 states and 1085 transitions. [2023-12-16 15:43:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 15:43:11,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-16 15:43:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:11,976 INFO L225 Difference]: With dead ends: 766 [2023-12-16 15:43:11,976 INFO L226 Difference]: Without dead ends: 437 [2023-12-16 15:43:11,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-16 15:43:11,978 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 433 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:11,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1968 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 15:43:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-16 15:43:11,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 399. [2023-12-16 15:43:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 320 states have (on average 1.3125) internal successors, (420), 323 states have internal predecessors, (420), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 566 transitions. [2023-12-16 15:43:11,999 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 566 transitions. Word has length 175 [2023-12-16 15:43:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:11,999 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 566 transitions. [2023-12-16 15:43:11,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 566 transitions. [2023-12-16 15:43:12,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 15:43:12,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:12,001 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:12,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-16 15:43:12,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:12,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:12,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash 735214671, now seen corresponding path program 1 times [2023-12-16 15:43:12,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:12,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048030267] [2023-12-16 15:43:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:12,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:12,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:12,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:12,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 15:43:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:12,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:43:12,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:12,476 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 [2023-12-16 15:43:12,548 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 [2023-12-16 15:43:12,552 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 15 [2023-12-16 15:43:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:12,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:12,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:12,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048030267] [2023-12-16 15:43:12,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048030267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:12,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:12,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:43:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162701989] [2023-12-16 15:43:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:43:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:43:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:43:12,569 INFO L87 Difference]: Start difference. First operand 399 states and 566 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:13,080 INFO L93 Difference]: Finished difference Result 800 states and 1131 transitions. [2023-12-16 15:43:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 15:43:13,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-16 15:43:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:13,082 INFO L225 Difference]: With dead ends: 800 [2023-12-16 15:43:13,082 INFO L226 Difference]: Without dead ends: 402 [2023-12-16 15:43:13,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:43:13,083 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 294 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:13,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1394 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:43:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-16 15:43:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 396. [2023-12-16 15:43:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 317 states have (on average 1.3091482649842272) internal successors, (415), 320 states have internal predecessors, (415), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 561 transitions. [2023-12-16 15:43:13,104 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 561 transitions. Word has length 175 [2023-12-16 15:43:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:13,105 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 561 transitions. [2023-12-16 15:43:13,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 561 transitions. [2023-12-16 15:43:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-16 15:43:13,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:13,107 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:13,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:13,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:13,313 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:13,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash 185103418, now seen corresponding path program 1 times [2023-12-16 15:43:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:13,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605545625] [2023-12-16 15:43:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:13,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:13,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 15:43:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:13,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 15:43:13,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:13,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:13,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:13,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605545625] [2023-12-16 15:43:13,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605545625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:13,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:13,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 15:43:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56726023] [2023-12-16 15:43:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:13,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 15:43:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 15:43:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 15:43:13,540 INFO L87 Difference]: Start difference. First operand 396 states and 561 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:13,575 INFO L93 Difference]: Finished difference Result 793 states and 1124 transitions. [2023-12-16 15:43:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 15:43:13,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-16 15:43:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:13,577 INFO L225 Difference]: With dead ends: 793 [2023-12-16 15:43:13,578 INFO L226 Difference]: Without dead ends: 398 [2023-12-16 15:43:13,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 15:43:13,579 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:13,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 343 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:43:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-16 15:43:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2023-12-16 15:43:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 318 states have (on average 1.3081761006289307) internal successors, (416), 321 states have internal predecessors, (416), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 562 transitions. [2023-12-16 15:43:13,601 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 562 transitions. Word has length 176 [2023-12-16 15:43:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:13,601 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 562 transitions. [2023-12-16 15:43:13,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 562 transitions. [2023-12-16 15:43:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-16 15:43:13,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:13,603 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:13,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:13,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:13,810 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:13,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash -209263368, now seen corresponding path program 1 times [2023-12-16 15:43:13,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:13,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885106941] [2023-12-16 15:43:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:13,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:13,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:13,812 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:13,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 15:43:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:14,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:43:14,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:14,030 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 [2023-12-16 15:43:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:14,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:14,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:14,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885106941] [2023-12-16 15:43:14,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885106941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:14,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:14,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:43:14,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446962797] [2023-12-16 15:43:14,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:14,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:43:14,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:43:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:43:14,042 INFO L87 Difference]: Start difference. First operand 397 states and 562 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:14,133 INFO L93 Difference]: Finished difference Result 715 states and 1012 transitions. [2023-12-16 15:43:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:43:14,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-16 15:43:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:14,135 INFO L225 Difference]: With dead ends: 715 [2023-12-16 15:43:14,135 INFO L226 Difference]: Without dead ends: 319 [2023-12-16 15:43:14,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:43:14,137 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 4 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:14,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 480 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:43:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-16 15:43:14,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2023-12-16 15:43:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 239 states have (on average 1.2677824267782427) internal successors, (303), 242 states have internal predecessors, (303), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 449 transitions. [2023-12-16 15:43:14,155 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 449 transitions. Word has length 176 [2023-12-16 15:43:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:14,156 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 449 transitions. [2023-12-16 15:43:14,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 449 transitions. [2023-12-16 15:43:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-16 15:43:14,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:14,158 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:14,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:14,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:14,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:14,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash 531213082, now seen corresponding path program 1 times [2023-12-16 15:43:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044483054] [2023-12-16 15:43:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:14,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:14,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:14,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:14,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 15:43:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:14,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 15:43:14,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:14,622 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 [2023-12-16 15:43:14,669 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 17 treesize of output 9 [2023-12-16 15:43:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:14,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:14,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:14,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044483054] [2023-12-16 15:43:14,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044483054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:14,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:14,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 15:43:14,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89716813] [2023-12-16 15:43:14,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:14,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 15:43:14,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:14,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 15:43:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:43:14,699 INFO L87 Difference]: Start difference. First operand 318 states and 449 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:14,924 INFO L93 Difference]: Finished difference Result 684 states and 967 transitions. [2023-12-16 15:43:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:43:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 177 [2023-12-16 15:43:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:14,926 INFO L225 Difference]: With dead ends: 684 [2023-12-16 15:43:14,926 INFO L226 Difference]: Without dead ends: 403 [2023-12-16 15:43:14,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-16 15:43:14,927 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 304 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:14,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1168 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:43:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-12-16 15:43:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 327. [2023-12-16 15:43:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 248 states have (on average 1.2580645161290323) internal successors, (312), 251 states have internal predecessors, (312), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 458 transitions. [2023-12-16 15:43:14,944 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 458 transitions. Word has length 177 [2023-12-16 15:43:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:14,944 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 458 transitions. [2023-12-16 15:43:14,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 458 transitions. [2023-12-16 15:43:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-16 15:43:14,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:14,946 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:14,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:15,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:15,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:15,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:15,154 INFO L85 PathProgramCache]: Analyzing trace with hash -947914411, now seen corresponding path program 1 times [2023-12-16 15:43:15,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:15,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093611786] [2023-12-16 15:43:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:15,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:15,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:15,156 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:15,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 15:43:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:15,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 15:43:15,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:15,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:15,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:15,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093611786] [2023-12-16 15:43:15,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093611786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:15,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:15,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 15:43:15,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247509060] [2023-12-16 15:43:15,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:15,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 15:43:15,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:15,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 15:43:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 15:43:15,454 INFO L87 Difference]: Start difference. First operand 327 states and 458 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:15,508 INFO L93 Difference]: Finished difference Result 704 states and 987 transitions. [2023-12-16 15:43:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 15:43:15,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-12-16 15:43:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:15,511 INFO L225 Difference]: With dead ends: 704 [2023-12-16 15:43:15,512 INFO L226 Difference]: Without dead ends: 414 [2023-12-16 15:43:15,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 15:43:15,515 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 40 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:15,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 361 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:43:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-16 15:43:15,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 330. [2023-12-16 15:43:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 251 states have (on average 1.254980079681275) internal successors, (315), 254 states have internal predecessors, (315), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 461 transitions. [2023-12-16 15:43:15,543 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 461 transitions. Word has length 179 [2023-12-16 15:43:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:15,544 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 461 transitions. [2023-12-16 15:43:15,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 461 transitions. [2023-12-16 15:43:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-16 15:43:15,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:15,546 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:15,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:15,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:15,753 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:15,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1968982765, now seen corresponding path program 1 times [2023-12-16 15:43:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:15,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084518331] [2023-12-16 15:43:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:15,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:15,756 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:15,791 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 [2023-12-16 15:43:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:16,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 15:43:16,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:16,027 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 [2023-12-16 15:43:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-16 15:43:16,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:43:16,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084518331] [2023-12-16 15:43:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084518331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:43:16,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:43:16,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 15:43:16,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284835106] [2023-12-16 15:43:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:43:16,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:43:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:43:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:43:16,044 INFO L87 Difference]: Start difference. First operand 330 states and 461 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:16,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:16,167 INFO L93 Difference]: Finished difference Result 608 states and 846 transitions. [2023-12-16 15:43:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:43:16,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-12-16 15:43:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:16,170 INFO L225 Difference]: With dead ends: 608 [2023-12-16 15:43:16,170 INFO L226 Difference]: Without dead ends: 315 [2023-12-16 15:43:16,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:43:16,171 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 82 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:16,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 391 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:43:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-16 15:43:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 312. [2023-12-16 15:43:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 236 states have internal predecessors, (288), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 434 transitions. [2023-12-16 15:43:16,193 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 434 transitions. Word has length 179 [2023-12-16 15:43:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:16,194 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 434 transitions. [2023-12-16 15:43:16,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-16 15:43:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 434 transitions. [2023-12-16 15:43:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-16 15:43:16,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:16,195 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:16,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:16,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:16,401 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:16,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1327251746, now seen corresponding path program 1 times [2023-12-16 15:43:16,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:16,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011878737] [2023-12-16 15:43:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:16,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:16,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:16,404 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:16,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 15:43:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:16,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 15:43:16,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:16,841 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 8 treesize of output 1 [2023-12-16 15:43:16,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-16 15:43:17,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-16 15:43:17,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-16 15:43:17,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2023-12-16 15:43:17,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:43:17,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2023-12-16 15:43:18,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:43:18,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 37 [2023-12-16 15:43:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 193 proven. 552 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-12-16 15:43:18,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:43:19,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:19,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011878737] [2023-12-16 15:43:19,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011878737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:43:19,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1101517620] [2023-12-16 15:43:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:19,087 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:43:19,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:43:19,126 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:43:19,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-16 15:43:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:19,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 15:43:19,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:19,739 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 [2023-12-16 15:43:19,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-16 15:43:20,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-16 15:43:20,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-16 15:43:20,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-16 15:43:20,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-12-16 15:43:21,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-12-16 15:43:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 161 proven. 552 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-12-16 15:43:21,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:43:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1101517620] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:43:21,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:43:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2023-12-16 15:43:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028257590] [2023-12-16 15:43:21,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:43:21,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 15:43:21,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 15:43:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-12-16 15:43:21,526 INFO L87 Difference]: Start difference. First operand 312 states and 434 transitions. Second operand has 20 states, 18 states have (on average 7.055555555555555) internal successors, (127), 17 states have internal predecessors, (127), 11 states have call successors, (46), 9 states have call predecessors, (46), 11 states have return successors, (46), 11 states have call predecessors, (46), 11 states have call successors, (46) [2023-12-16 15:43:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:23,526 INFO L93 Difference]: Finished difference Result 669 states and 879 transitions. [2023-12-16 15:43:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 15:43:23,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 7.055555555555555) internal successors, (127), 17 states have internal predecessors, (127), 11 states have call successors, (46), 9 states have call predecessors, (46), 11 states have return successors, (46), 11 states have call predecessors, (46), 11 states have call successors, (46) Word has length 181 [2023-12-16 15:43:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:23,528 INFO L225 Difference]: With dead ends: 669 [2023-12-16 15:43:23,528 INFO L226 Difference]: Without dead ends: 394 [2023-12-16 15:43:23,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 557 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=376, Invalid=1030, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 15:43:23,529 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 196 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:23,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 950 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 15:43:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-12-16 15:43:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 376. [2023-12-16 15:43:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 281 states have (on average 1.1921708185053381) internal successors, (335), 284 states have internal predecessors, (335), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 481 transitions. [2023-12-16 15:43:23,559 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 481 transitions. Word has length 181 [2023-12-16 15:43:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:23,560 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 481 transitions. [2023-12-16 15:43:23,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 7.055555555555555) internal successors, (127), 17 states have internal predecessors, (127), 11 states have call successors, (46), 9 states have call predecessors, (46), 11 states have return successors, (46), 11 states have call predecessors, (46), 11 states have call successors, (46) [2023-12-16 15:43:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 481 transitions. [2023-12-16 15:43:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-16 15:43:23,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:23,561 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:23,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:23,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:23,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:23,967 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:23,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 353553148, now seen corresponding path program 1 times [2023-12-16 15:43:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692686457] [2023-12-16 15:43:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:23,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:23,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:23,969 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:23,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 15:43:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:24,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:43:24,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:24,393 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 19 treesize of output 1 [2023-12-16 15:43:24,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 15:43:24,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 15:43:24,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-16 15:43:24,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:43:24,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 36 [2023-12-16 15:43:25,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:43:25,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 29 [2023-12-16 15:43:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 173 proven. 546 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-12-16 15:43:25,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:43:25,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692686457] [2023-12-16 15:43:25,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692686457] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:43:25,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [248184770] [2023-12-16 15:43:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:25,637 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:43:25,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:43:25,646 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:43:25,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-16 15:43:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:26,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 15:43:26,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:26,666 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 [2023-12-16 15:43:27,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-16 15:43:27,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-16 15:43:28,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-16 15:43:28,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-16 15:43:28,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-16 15:43:31,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2023-12-16 15:43:31,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 69 treesize of output 49 [2023-12-16 15:43:31,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 15:43:31,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 83 [2023-12-16 15:43:31,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-12-16 15:43:31,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 73 [2023-12-16 15:43:32,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 60 [2023-12-16 15:43:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 192 proven. 528 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-16 15:43:32,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:43:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [248184770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:43:34,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:43:34,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2023-12-16 15:43:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742697405] [2023-12-16 15:43:34,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:43:34,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 15:43:34,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 15:43:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2023-12-16 15:43:34,890 INFO L87 Difference]: Start difference. First operand 376 states and 481 transitions. Second operand has 21 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 10 states have call successors, (46), 9 states have call predecessors, (46), 10 states have return successors, (46), 9 states have call predecessors, (46), 10 states have call successors, (46) [2023-12-16 15:43:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:43:39,288 INFO L93 Difference]: Finished difference Result 765 states and 953 transitions. [2023-12-16 15:43:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 15:43:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 10 states have call successors, (46), 9 states have call predecessors, (46), 10 states have return successors, (46), 9 states have call predecessors, (46), 10 states have call successors, (46) Word has length 183 [2023-12-16 15:43:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:43:39,292 INFO L225 Difference]: With dead ends: 765 [2023-12-16 15:43:39,292 INFO L226 Difference]: Without dead ends: 442 [2023-12-16 15:43:39,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=664, Invalid=2306, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 15:43:39,294 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 934 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 15:43:39,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 629 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 15:43:39,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-16 15:43:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 408. [2023-12-16 15:43:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 305 states have (on average 1.1639344262295082) internal successors, (355), 308 states have internal predecessors, (355), 73 states have call successors, (73), 29 states have call predecessors, (73), 29 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:43:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 501 transitions. [2023-12-16 15:43:39,360 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 501 transitions. Word has length 183 [2023-12-16 15:43:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:43:39,361 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 501 transitions. [2023-12-16 15:43:39,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 10 states have call successors, (46), 9 states have call predecessors, (46), 10 states have return successors, (46), 9 states have call predecessors, (46), 10 states have call successors, (46) [2023-12-16 15:43:39,361 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 501 transitions. [2023-12-16 15:43:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-16 15:43:39,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:43:39,362 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:43:39,386 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 [2023-12-16 15:43:39,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-16 15:43:39,774 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=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:43:39,775 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:43:39,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:43:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash -162257244, now seen corresponding path program 1 times [2023-12-16 15:43:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:43:39,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527007500] [2023-12-16 15:43:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:39,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:43:39,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:43:39,777 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:43:39,812 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 (22)] Waiting until timeout for monitored process [2023-12-16 15:43:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:40,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 15:43:40,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:40,355 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 8 treesize of output 1 [2023-12-16 15:43:40,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 15:43:40,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 15:43:40,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 treesize of output 23 [2023-12-16 15:43:41,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:43:41,038 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 43 treesize of output 25 [2023-12-16 15:43:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 137 proven. 540 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2023-12-16 15:43:41,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:43:41,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:43:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527007500] [2023-12-16 15:43:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527007500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:43:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [417794248] [2023-12-16 15:43:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:43:41,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:43:41,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:43:41,228 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:43:41,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-16 15:43:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:43:41,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-16 15:43:41,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:43:42,745 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 [2023-12-16 15:43:43,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-16 15:43:43,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-16 15:43:44,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-16 15:43:44,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-12-16 15:43:47,992 INFO L349 Elim1Store]: treesize reduction 49, result has 18.3 percent of original size [2023-12-16 15:43:47,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 64 [2023-12-16 15:43:48,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 55 [2023-12-16 15:43:48,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 15:43:48,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 97 [2023-12-16 15:43:48,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2023-12-16 15:43:48,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 87 [2023-12-16 15:43:49,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 67 [2023-12-16 15:43:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 208 proven. 528 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-16 15:43:49,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:43:57,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [417794248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:43:57,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:43:57,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 22 [2023-12-16 15:43:57,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909792937] [2023-12-16 15:43:57,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:43:57,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 15:43:57,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:43:57,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 15:43:57,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=877, Unknown=1, NotChecked=0, Total=992 [2023-12-16 15:43:57,890 INFO L87 Difference]: Start difference. First operand 408 states and 501 transitions. Second operand has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 9 states have call successors, (46), 8 states have call predecessors, (46), 9 states have return successors, (46), 8 states have call predecessors, (46), 9 states have call successors, (46) [2023-12-16 15:44:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:44:03,043 INFO L93 Difference]: Finished difference Result 789 states and 963 transitions. [2023-12-16 15:44:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 15:44:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 9 states have call successors, (46), 8 states have call predecessors, (46), 9 states have return successors, (46), 8 states have call predecessors, (46), 9 states have call successors, (46) Word has length 185 [2023-12-16 15:44:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:44:03,046 INFO L225 Difference]: With dead ends: 789 [2023-12-16 15:44:03,046 INFO L226 Difference]: Without dead ends: 442 [2023-12-16 15:44:03,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=570, Invalid=2185, Unknown=1, NotChecked=0, Total=2756 [2023-12-16 15:44:03,048 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 691 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 15:44:03,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 831 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 15:44:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-16 15:44:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 408. [2023-12-16 15:44:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 305 states have (on average 1.1508196721311474) internal successors, (351), 308 states have internal predecessors, (351), 73 states have call successors, (73), 29 states have call predecessors, (73), 29 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 15:44:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 497 transitions. [2023-12-16 15:44:03,138 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 497 transitions. Word has length 185 [2023-12-16 15:44:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:44:03,138 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 497 transitions. [2023-12-16 15:44:03,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 9 states have call successors, (46), 8 states have call predecessors, (46), 9 states have return successors, (46), 8 states have call predecessors, (46), 9 states have call successors, (46) [2023-12-16 15:44:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 497 transitions. [2023-12-16 15:44:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-16 15:44:03,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:44:03,139 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:44:03,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-16 15:44:03,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 15:44:03,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:44:03,553 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:44:03,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:44:03,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2092233504, now seen corresponding path program 1 times [2023-12-16 15:44:03,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:44:03,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489529275] [2023-12-16 15:44:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:44:03,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:44:03,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:44:03,555 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 15:44:03,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-16 15:44:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:44:03,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-16 15:44:03,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:44:04,441 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 [2023-12-16 15:44:04,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-16 15:44:04,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-12-16 15:44:06,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:44:06,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-16 15:44:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 128 proven. 540 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-12-16 15:44:06,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:44:06,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:44:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489529275] [2023-12-16 15:44:06,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489529275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:44:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [241519382] [2023-12-16 15:44:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:44:06,292 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:44:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:44:06,293 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:44:06,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-16 15:44:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:44:06,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 15:44:06,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:44:07,801 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 Received shutdown request... [2023-12-16 15:44:08,298 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:44:08,299 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 15:44:08,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-16 15:44:08,311 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 (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:44:08,311 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:44:08,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-16 15:44:08,700 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=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 15:44:08,700 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 186 with TraceHistMax 23,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 27 known predicates. [2023-12-16 15:44:08,704 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] [2023-12-16 15:44:08,707 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 15:44:08,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:44:08 BoogieIcfgContainer [2023-12-16 15:44:08,708 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 15:44:08,708 INFO L158 Benchmark]: Toolchain (without parser) took 69082.56ms. Allocated memory was 207.6MB in the beginning and 659.6MB in the end (delta: 451.9MB). Free memory was 169.8MB in the beginning and 421.8MB in the end (delta: -252.0MB). Peak memory consumption was 200.6MB. Max. memory is 8.0GB. [2023-12-16 15:44:08,709 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 207.6MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:44:08,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.87ms. Allocated memory is still 207.6MB. Free memory was 169.4MB in the beginning and 152.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 15:44:08,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.42ms. Allocated memory is still 207.6MB. Free memory was 152.6MB in the beginning and 148.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 15:44:08,709 INFO L158 Benchmark]: Boogie Preprocessor took 76.67ms. Allocated memory is still 207.6MB. Free memory was 148.8MB in the beginning and 143.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 15:44:08,709 INFO L158 Benchmark]: RCFGBuilder took 899.18ms. Allocated memory is still 207.6MB. Free memory was 143.2MB in the beginning and 174.0MB in the end (delta: -30.8MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. [2023-12-16 15:44:08,709 INFO L158 Benchmark]: TraceAbstraction took 67600.53ms. Allocated memory was 207.6MB in the beginning and 659.6MB in the end (delta: 451.9MB). Free memory was 173.0MB in the beginning and 421.8MB in the end (delta: -248.8MB). Peak memory consumption was 203.4MB. Max. memory is 8.0GB. [2023-12-16 15:44:08,710 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 207.6MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 461.87ms. Allocated memory is still 207.6MB. Free memory was 169.4MB in the beginning and 152.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.42ms. Allocated memory is still 207.6MB. Free memory was 152.6MB in the beginning and 148.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 76.67ms. Allocated memory is still 207.6MB. Free memory was 148.8MB in the beginning and 143.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 899.18ms. Allocated memory is still 207.6MB. Free memory was 143.2MB in the beginning and 174.0MB in the end (delta: -30.8MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. * TraceAbstraction took 67600.53ms. Allocated memory was 207.6MB in the beginning and 659.6MB in the end (delta: 451.9MB). Free memory was 173.0MB in the beginning and 421.8MB in the end (delta: -248.8MB). Peak memory consumption was 203.4MB. 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 186 with TraceHistMax 23,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 27 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.6s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5053 SdHoareTripleChecker+Valid, 10.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5052 mSDsluCounter, 17813 SdHoareTripleChecker+Invalid, 9.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13909 mSDsCounter, 701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5125 IncrementalHoareTripleChecker+Invalid, 5826 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 701 mSolverCounterUnsat, 3904 mSDtfsCounter, 5125 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4516 GetRequests, 4277 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=408occurred in iteration=18, InterpolantAutomatonStates: 184, 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, 19 MinimizatonAttempts, 1260 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 33.0s InterpolantComputationTime, 3904 NumberOfCodeBlocks, 3904 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 3882 ConstructedInterpolants, 695 QuantifiedInterpolants, 39884 SizeOfPredicates, 164 NumberOfNonLiveVariables, 8351 ConjunctsInSsa, 263 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 19018/22264 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