/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-46.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 15:38:45,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 15:38:45,199 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 15:38:45,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 15:38:45,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 15:38:45,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 15:38:45,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 15:38:45,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 15:38:45,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 15:38:45,244 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 15:38:45,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 15:38:45,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 15:38:45,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 15:38:45,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 15:38:45,245 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 15:38:45,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 15:38:45,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 15:38:45,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 15:38:45,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 15:38:45,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 15:38:45,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 15:38:45,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 15:38:45,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 15:38:45,251 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 15:38:45,251 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 15:38:45,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 15:38:45,251 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 15:38:45,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 15:38:45,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 15:38:45,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 15:38:45,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 15:38:45,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 15:38:45,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 15:38:45,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 15:38:45,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:38:45,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 15:38:45,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 15:38:45,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 15:38:45,254 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 15:38:45,254 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 15:38:45,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 15:38:45,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 15:38:45,255 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 15:38:45,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 15:38:45,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 15:38:45,255 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 15:38:45,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 15:38:45,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 15:38:45,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 15:38:45,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 15:38:45,466 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 15:38:45,467 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 15:38:45,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-46.i [2023-12-16 15:38:46,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 15:38:46,935 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 15:38:46,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-46.i [2023-12-16 15:38:46,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf642144f/8236cec306fc46b294fb391e31851e9d/FLAG3a5a2e840 [2023-12-16 15:38:46,954 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf642144f/8236cec306fc46b294fb391e31851e9d [2023-12-16 15:38:46,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 15:38:46,957 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 15:38:46,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 15:38:46,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 15:38:46,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 15:38:46,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:38:46" (1/1) ... [2023-12-16 15:38:46,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601fff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:46, skipping insertion in model container [2023-12-16 15:38:46,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:38:46" (1/1) ... [2023-12-16 15:38:47,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 15:38:47,159 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-46.i[917,930] [2023-12-16 15:38:47,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:38:47,240 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 15:38:47,254 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-46.i[917,930] [2023-12-16 15:38:47,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 15:38:47,315 INFO L206 MainTranslator]: Completed translation [2023-12-16 15:38:47,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47 WrapperNode [2023-12-16 15:38:47,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 15:38:47,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 15:38:47,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 15:38:47,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 15:38:47,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,392 INFO L138 Inliner]: procedures = 33, calls = 130, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 392 [2023-12-16 15:38:47,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 15:38:47,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 15:38:47,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 15:38:47,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 15:38:47,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,417 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,440 INFO L175 MemorySlicer]: Split 101 memory accesses to 5 slices as follows [2, 37, 8, 40, 14]. 40 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 3, 2]. The 16 writes are split as follows [0, 9, 1, 3, 3]. [2023-12-16 15:38:47,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 15:38:47,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 15:38:47,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 15:38:47,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 15:38:47,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (1/1) ... [2023-12-16 15:38:47,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 15:38:47,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 15:38:47,517 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 15:38:47,544 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 15:38:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 15:38:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-16 15:38:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-16 15:38:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-16 15:38:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-16 15:38:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-16 15:38:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-16 15:38:47,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-16 15:38:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-16 15:38:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-16 15:38:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-16 15:38:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-16 15:38:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-16 15:38:47,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-16 15:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-16 15:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-16 15:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-16 15:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-16 15:38:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-16 15:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-16 15:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-16 15:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 15:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 15:38:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 15:38:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 15:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 15:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-16 15:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-16 15:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-16 15:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-16 15:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-16 15:38:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 15:38:47,563 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 15:38:47,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-16 15:38:47,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-16 15:38:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-16 15:38:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-16 15:38:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-16 15:38:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-16 15:38:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-16 15:38:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-16 15:38:47,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-16 15:38:47,721 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 15:38:47,723 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 15:38:48,259 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 15:38:48,303 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 15:38:48,303 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 15:38:48,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:38:48 BoogieIcfgContainer [2023-12-16 15:38:48,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 15:38:48,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 15:38:48,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 15:38:48,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 15:38:48,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:38:46" (1/3) ... [2023-12-16 15:38:48,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1ab429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:38:48, skipping insertion in model container [2023-12-16 15:38:48,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:38:47" (2/3) ... [2023-12-16 15:38:48,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1ab429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:38:48, skipping insertion in model container [2023-12-16 15:38:48,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:38:48" (3/3) ... [2023-12-16 15:38:48,311 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-46.i [2023-12-16 15:38:48,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 15:38:48,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 15:38:48,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 15:38:48,408 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;@5b1adf12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 15:38:48,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 15:38:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-16 15:38:48,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 15:38:48,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:48,421 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:48,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:48,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:48,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1536828451, now seen corresponding path program 1 times [2023-12-16 15:38:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:48,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012800200] [2023-12-16 15:38:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:48,439 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 15:38:48,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:48,444 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 15:38:48,452 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 15:38:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:48,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 15:38:48,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-16 15:38:48,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:38:48,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012800200] [2023-12-16 15:38:48,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012800200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:38:48,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:38:48,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 15:38:48,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506233514] [2023-12-16 15:38:48,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:38:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 15:38:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:38:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 15:38:48,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 15:38:48,850 INFO L87 Difference]: Start difference. First operand has 86 states, 69 states have (on average 1.4492753623188406) internal successors, (100), 70 states have internal predecessors, (100), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 15:38:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:38:48,892 INFO L93 Difference]: Finished difference Result 169 states and 268 transitions. [2023-12-16 15:38:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 15:38:48,895 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2023-12-16 15:38:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:38:48,901 INFO L225 Difference]: With dead ends: 169 [2023-12-16 15:38:48,901 INFO L226 Difference]: Without dead ends: 84 [2023-12-16 15:38:48,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 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 15:38:48,907 INFO L413 NwaCegarLoop]: 119 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, 119 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 15:38:48,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 15:38:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-16 15:38:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-16 15:38:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-16 15:38:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 123 transitions. [2023-12-16 15:38:48,960 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 123 transitions. Word has length 109 [2023-12-16 15:38:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:38:48,960 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 123 transitions. [2023-12-16 15:38:48,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 15:38:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 123 transitions. [2023-12-16 15:38:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 15:38:48,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:38:48,964 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:48,972 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 15:38:49,164 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 15:38:49,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:38:49,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:38:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash -374739297, now seen corresponding path program 1 times [2023-12-16 15:38:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:38:49,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566336477] [2023-12-16 15:38:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:49,167 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 15:38:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:38:49,169 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 15:38:49,188 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 15:38:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:49,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 15:38:49,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:49,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-16 15:38:51,641 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 15:38:52,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-16 15:38:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:38:53,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:38:54,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:38:54,502 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 23 treesize of output 26 [2023-12-16 15:38:54,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:38:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566336477] [2023-12-16 15:38:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566336477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:38:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1140006481] [2023-12-16 15:38:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:38:54,992 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 15:38:54,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 15:38:55,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 15:38:55,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-16 15:38:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:38:55,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 15:38:55,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:38:57,271 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 29 treesize of output 24 [2023-12-16 15:38:58,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-12-16 15:38:59,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-16 15:38:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 99 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 15:38:59,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:39:00,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1140006481] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 15:39:00,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 15:39:00,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 24 [2023-12-16 15:39:00,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813501352] [2023-12-16 15:39:00,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 15:39:00,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 15:39:00,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 15:39:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 15:39:00,837 INFO L87 Difference]: Start difference. First operand 84 states and 123 transitions. Second operand has 25 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 20 states have internal predecessors, (80), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-16 15:39:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:19,739 INFO L93 Difference]: Finished difference Result 444 states and 637 transitions. [2023-12-16 15:39:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 15:39:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 20 states have internal predecessors, (80), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) Word has length 109 [2023-12-16 15:39:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:19,744 INFO L225 Difference]: With dead ends: 444 [2023-12-16 15:39:19,744 INFO L226 Difference]: Without dead ends: 361 [2023-12-16 15:39:19,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 245 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=852, Invalid=3180, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 15:39:19,747 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 1500 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:19,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1276 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-16 15:39:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-16 15:39:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 199. [2023-12-16 15:39:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 157 states have (on average 1.3503184713375795) internal successors, (212), 158 states have internal predecessors, (212), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 15:39:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 282 transitions. [2023-12-16 15:39:19,787 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 282 transitions. Word has length 109 [2023-12-16 15:39:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:19,788 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 282 transitions. [2023-12-16 15:39:19,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 20 states have internal predecessors, (80), 7 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 5 states have call predecessors, (28), 7 states have call successors, (28) [2023-12-16 15:39:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 282 transitions. [2023-12-16 15:39:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 15:39:19,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:19,790 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:19,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-16 15:39:19,999 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 15:39:20,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 15:39:20,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:20,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:20,193 INFO L85 PathProgramCache]: Analyzing trace with hash -116573859, now seen corresponding path program 1 times [2023-12-16 15:39:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379139768] [2023-12-16 15:39:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:20,195 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 15:39:20,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:20,197 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 15:39:20,198 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 15:39:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:20,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 15:39:20,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:20,394 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 15:39:20,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-16 15:39:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:20,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:20,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379139768] [2023-12-16 15:39:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379139768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:20,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:39:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316644023] [2023-12-16 15:39:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:39:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:39:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:39:20,433 INFO L87 Difference]: Start difference. First operand 199 states and 282 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:20,622 INFO L93 Difference]: Finished difference Result 416 states and 597 transitions. [2023-12-16 15:39:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 15:39:20,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2023-12-16 15:39:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:20,626 INFO L225 Difference]: With dead ends: 416 [2023-12-16 15:39:20,626 INFO L226 Difference]: Without dead ends: 297 [2023-12-16 15:39:20,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:39:20,628 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 89 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:20,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 477 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:39:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-16 15:39:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 215. [2023-12-16 15:39:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 173 states have (on average 1.346820809248555) internal successors, (233), 174 states have internal predecessors, (233), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-16 15:39:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 303 transitions. [2023-12-16 15:39:20,655 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 303 transitions. Word has length 109 [2023-12-16 15:39:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:20,656 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 303 transitions. [2023-12-16 15:39:20,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 303 transitions. [2023-12-16 15:39:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 15:39:20,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:20,658 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:20,668 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 15:39:20,865 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 15:39:20,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:20,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:20,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1242710302, now seen corresponding path program 1 times [2023-12-16 15:39:20,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:20,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908032637] [2023-12-16 15:39:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:20,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:39:20,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:20,868 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 15:39:20,879 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 15:39:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:21,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 15:39:21,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:21,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-16 15:39:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:21,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:21,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908032637] [2023-12-16 15:39:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908032637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:21,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 15:39:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938933394] [2023-12-16 15:39:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:21,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 15:39:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 15:39:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 15:39:21,191 INFO L87 Difference]: Start difference. First operand 215 states and 303 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:21,462 INFO L93 Difference]: Finished difference Result 503 states and 719 transitions. [2023-12-16 15:39:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 15:39:21,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 110 [2023-12-16 15:39:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:21,465 INFO L225 Difference]: With dead ends: 503 [2023-12-16 15:39:21,465 INFO L226 Difference]: Without dead ends: 384 [2023-12-16 15:39:21,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 15:39:21,467 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 181 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:21,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 324 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:39:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-16 15:39:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 374. [2023-12-16 15:39:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 309 states have (on average 1.3656957928802589) internal successors, (422), 311 states have internal predecessors, (422), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:39:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 534 transitions. [2023-12-16 15:39:21,508 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 534 transitions. Word has length 110 [2023-12-16 15:39:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:21,508 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 534 transitions. [2023-12-16 15:39:21,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 534 transitions. [2023-12-16 15:39:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 15:39:21,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:21,511 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:21,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 15:39:21,718 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 15:39:21,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:21,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:21,718 INFO L85 PathProgramCache]: Analyzing trace with hash -425061852, now seen corresponding path program 1 times [2023-12-16 15:39:21,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:21,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557553819] [2023-12-16 15:39:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:21,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:39:21,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:21,720 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 15:39:21,729 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 15:39:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:21,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 15:39:21,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:22,838 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 15:39:22,915 INFO L349 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2023-12-16 15:39:22,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-12-16 15:39:22,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:39:22,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 30 [2023-12-16 15:39:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:22,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:22,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557553819] [2023-12-16 15:39:22,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557553819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:22,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:39:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560852944] [2023-12-16 15:39:22,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:22,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:39:22,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:39:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:39:22,982 INFO L87 Difference]: Start difference. First operand 374 states and 534 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:23,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:23,561 INFO L93 Difference]: Finished difference Result 622 states and 894 transitions. [2023-12-16 15:39:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 15:39:23,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 110 [2023-12-16 15:39:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:23,565 INFO L225 Difference]: With dead ends: 622 [2023-12-16 15:39:23,566 INFO L226 Difference]: Without dead ends: 523 [2023-12-16 15:39:23,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-12-16 15:39:23,567 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 223 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:23,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 607 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 15:39:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-16 15:39:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 378. [2023-12-16 15:39:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 313 states have (on average 1.3642172523961662) internal successors, (427), 315 states have internal predecessors, (427), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-16 15:39:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 539 transitions. [2023-12-16 15:39:23,611 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 539 transitions. Word has length 110 [2023-12-16 15:39:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:23,612 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 539 transitions. [2023-12-16 15:39:23,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 539 transitions. [2023-12-16 15:39:23,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 15:39:23,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:23,614 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:23,627 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 15:39:23,827 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 15:39:23,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:23,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1889027886, now seen corresponding path program 1 times [2023-12-16 15:39:23,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:23,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301968584] [2023-12-16 15:39:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:23,828 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 15:39:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:23,829 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 15:39:23,830 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 15:39:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:24,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:39:24,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:24,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:39:24,078 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 94 treesize of output 34 [2023-12-16 15:39:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:24,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:24,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:24,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301968584] [2023-12-16 15:39:24,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301968584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:24,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:24,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:39:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737493782] [2023-12-16 15:39:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:24,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:39:24,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:39:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:39:24,111 INFO L87 Difference]: Start difference. First operand 378 states and 539 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:28,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:39:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:28,545 INFO L93 Difference]: Finished difference Result 839 states and 1196 transitions. [2023-12-16 15:39:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 15:39:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-16 15:39:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:28,552 INFO L225 Difference]: With dead ends: 839 [2023-12-16 15:39:28,553 INFO L226 Difference]: Without dead ends: 554 [2023-12-16 15:39:28,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:39:28,556 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 108 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:28,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 574 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-12-16 15:39:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-16 15:39:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 541. [2023-12-16 15:39:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 454 states have (on average 1.3568281938325992) internal successors, (616), 459 states have internal predecessors, (616), 74 states have call successors, (74), 12 states have call predecessors, (74), 12 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 15:39:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 764 transitions. [2023-12-16 15:39:28,607 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 764 transitions. Word has length 111 [2023-12-16 15:39:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:28,608 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 764 transitions. [2023-12-16 15:39:28,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 764 transitions. [2023-12-16 15:39:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 15:39:28,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:28,610 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:28,620 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 15:39:28,818 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 15:39:28,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:28,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 663695970, now seen corresponding path program 1 times [2023-12-16 15:39:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:28,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943418866] [2023-12-16 15:39:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:28,819 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 15:39:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:28,820 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 15:39:28,821 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 15:39:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:29,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 15:39:29,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:29,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-16 15:39:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-16 15:39:29,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:39:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:29,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943418866] [2023-12-16 15:39:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943418866] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:39:29,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:39:29,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-12-16 15:39:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615326541] [2023-12-16 15:39:29,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:29,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:39:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:39:29,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 15:39:29,812 INFO L87 Difference]: Start difference. First operand 541 states and 764 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:30,111 INFO L93 Difference]: Finished difference Result 1223 states and 1725 transitions. [2023-12-16 15:39:30,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:39:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-16 15:39:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:30,116 INFO L225 Difference]: With dead ends: 1223 [2023-12-16 15:39:30,116 INFO L226 Difference]: Without dead ends: 799 [2023-12-16 15:39:30,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 15:39:30,117 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 119 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:30,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 446 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 15:39:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-16 15:39:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 572. [2023-12-16 15:39:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 483 states have (on average 1.349896480331263) internal successors, (652), 488 states have internal predecessors, (652), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 15:39:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 800 transitions. [2023-12-16 15:39:30,160 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 800 transitions. Word has length 111 [2023-12-16 15:39:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:30,160 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 800 transitions. [2023-12-16 15:39:30,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:30,161 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 800 transitions. [2023-12-16 15:39:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 15:39:30,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:30,162 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:30,169 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 15:39:30,369 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 15:39:30,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:30,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1343754340, now seen corresponding path program 1 times [2023-12-16 15:39:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:30,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377588884] [2023-12-16 15:39:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:30,371 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 15:39:30,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:30,373 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 15:39:30,376 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 15:39:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:30,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:39:30,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:30,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:30,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:30,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377588884] [2023-12-16 15:39:30,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377588884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:30,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:30,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:39:30,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077467011] [2023-12-16 15:39:30,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:30,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:39:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:30,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:39:30,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:39:30,585 INFO L87 Difference]: Start difference. First operand 572 states and 800 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:30,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:30,689 INFO L93 Difference]: Finished difference Result 1153 states and 1623 transitions. [2023-12-16 15:39:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:39:30,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-12-16 15:39:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:30,692 INFO L225 Difference]: With dead ends: 1153 [2023-12-16 15:39:30,692 INFO L226 Difference]: Without dead ends: 677 [2023-12-16 15:39:30,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:39:30,694 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 36 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:30,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 469 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:39:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-16 15:39:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 596. [2023-12-16 15:39:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 507 states have (on average 1.3333333333333333) internal successors, (676), 512 states have internal predecessors, (676), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 15:39:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 824 transitions. [2023-12-16 15:39:30,755 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 824 transitions. Word has length 111 [2023-12-16 15:39:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:30,755 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 824 transitions. [2023-12-16 15:39:30,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 824 transitions. [2023-12-16 15:39:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 15:39:30,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:30,757 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:30,765 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 15:39:30,964 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 15:39:30,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:30,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash 559478121, now seen corresponding path program 1 times [2023-12-16 15:39:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082444891] [2023-12-16 15:39:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:30,967 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 15:39:30,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:30,968 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 15:39:30,982 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 15:39:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:31,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 15:39:31,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:31,321 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 15:39:32,027 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 34 treesize of output 18 [2023-12-16 15:39:32,383 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 15:39:34,183 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 15:39:34,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2023-12-16 15:39:34,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:39:34,587 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 6 case distinctions, treesize of input 88 treesize of output 48 [2023-12-16 15:39:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 8 proven. 172 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-16 15:39:34,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:39:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:34,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082444891] [2023-12-16 15:39:34,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082444891] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:39:34,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:39:34,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 19 [2023-12-16 15:39:34,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471981414] [2023-12-16 15:39:34,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:34,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:39:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:39:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-16 15:39:34,851 INFO L87 Difference]: Start difference. First operand 596 states and 824 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:35,313 INFO L93 Difference]: Finished difference Result 935 states and 1302 transitions. [2023-12-16 15:39:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 15:39:35,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 112 [2023-12-16 15:39:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:35,317 INFO L225 Difference]: With dead ends: 935 [2023-12-16 15:39:35,317 INFO L226 Difference]: Without dead ends: 687 [2023-12-16 15:39:35,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2023-12-16 15:39:35,320 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 92 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:35,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 654 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:39:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-16 15:39:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 592. [2023-12-16 15:39:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 503 states have (on average 1.3359840954274353) internal successors, (672), 508 states have internal predecessors, (672), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 15:39:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 820 transitions. [2023-12-16 15:39:35,360 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 820 transitions. Word has length 112 [2023-12-16 15:39:35,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:35,360 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 820 transitions. [2023-12-16 15:39:35,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:35,361 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 820 transitions. [2023-12-16 15:39:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 15:39:35,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:35,362 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:35,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 15:39:35,570 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 15:39:35,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash 823968297, now seen corresponding path program 1 times [2023-12-16 15:39:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149162363] [2023-12-16 15:39:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:35,572 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 15:39:35,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:35,573 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 15:39:35,608 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 (12)] Waiting until timeout for monitored process [2023-12-16 15:39:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:35,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 15:39:35,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:35,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-16 15:39:37,607 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 15:39:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 1 proven. 143 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 15:39:39,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 15:39:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:40,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149162363] [2023-12-16 15:39:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149162363] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 15:39:40,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 15:39:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 22 [2023-12-16 15:39:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812289849] [2023-12-16 15:39:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:40,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:39:40,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:39:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-12-16 15:39:40,548 INFO L87 Difference]: Start difference. First operand 592 states and 820 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:41,255 INFO L93 Difference]: Finished difference Result 1676 states and 2323 transitions. [2023-12-16 15:39:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 15:39:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-16 15:39:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:41,264 INFO L225 Difference]: With dead ends: 1676 [2023-12-16 15:39:41,264 INFO L226 Difference]: Without dead ends: 1181 [2023-12-16 15:39:41,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-12-16 15:39:41,266 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 99 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:41,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 481 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 15:39:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2023-12-16 15:39:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 803. [2023-12-16 15:39:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 714 states have (on average 1.3515406162464987) internal successors, (965), 719 states have internal predecessors, (965), 74 states have call successors, (74), 14 states have call predecessors, (74), 14 states have return successors, (74), 69 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 15:39:41,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1113 transitions. [2023-12-16 15:39:41,322 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1113 transitions. Word has length 113 [2023-12-16 15:39:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:41,323 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1113 transitions. [2023-12-16 15:39:41,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1113 transitions. [2023-12-16 15:39:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 15:39:41,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:41,324 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:41,336 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 15:39:41,533 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 15:39:41,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:41,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:41,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1695991637, now seen corresponding path program 1 times [2023-12-16 15:39:41,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:41,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845555365] [2023-12-16 15:39:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:41,535 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 15:39:41,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:41,536 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 15:39:41,538 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 15:39:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:41,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 15:39:41,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:41,804 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 15:39:41,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-16 15:39:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:41,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:41,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845555365] [2023-12-16 15:39:41,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845555365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:41,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 15:39:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488802122] [2023-12-16 15:39:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:41,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 15:39:41,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 15:39:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 15:39:41,889 INFO L87 Difference]: Start difference. First operand 803 states and 1113 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:42,155 INFO L93 Difference]: Finished difference Result 1711 states and 2370 transitions. [2023-12-16 15:39:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 15:39:42,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-16 15:39:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:42,160 INFO L225 Difference]: With dead ends: 1711 [2023-12-16 15:39:42,160 INFO L226 Difference]: Without dead ends: 1038 [2023-12-16 15:39:42,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-16 15:39:42,162 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 126 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:42,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 742 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 15:39:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-12-16 15:39:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1005. [2023-12-16 15:39:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 865 states have (on average 1.322543352601156) internal successors, (1144), 875 states have internal predecessors, (1144), 117 states have call successors, (117), 22 states have call predecessors, (117), 22 states have return successors, (117), 107 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-16 15:39:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1378 transitions. [2023-12-16 15:39:42,226 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1378 transitions. Word has length 113 [2023-12-16 15:39:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:42,227 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 1378 transitions. [2023-12-16 15:39:42,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:42,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1378 transitions. [2023-12-16 15:39:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 15:39:42,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:42,229 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:42,240 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 15:39:42,440 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 15:39:42,440 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:42,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash 261755516, now seen corresponding path program 1 times [2023-12-16 15:39:42,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:42,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304837527] [2023-12-16 15:39:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:42,441 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 15:39:42,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:42,442 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 15:39:42,443 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 15:39:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:42,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 15:39:42,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:42,679 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 15:39:42,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-16 15:39:42,758 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:42,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:42,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:42,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304837527] [2023-12-16 15:39:42,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304837527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:42,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:42,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 15:39:42,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065324364] [2023-12-16 15:39:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:42,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 15:39:42,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:42,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 15:39:42,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 15:39:42,760 INFO L87 Difference]: Start difference. First operand 1005 states and 1378 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 15:39:43,174 INFO L93 Difference]: Finished difference Result 2090 states and 2845 transitions. [2023-12-16 15:39:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 15:39:43,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-12-16 15:39:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 15:39:43,180 INFO L225 Difference]: With dead ends: 2090 [2023-12-16 15:39:43,180 INFO L226 Difference]: Without dead ends: 1284 [2023-12-16 15:39:43,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-16 15:39:43,183 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 120 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:43,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 670 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 15:39:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-12-16 15:39:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1043. [2023-12-16 15:39:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 903 states have (on average 1.3167220376522701) internal successors, (1189), 913 states have internal predecessors, (1189), 117 states have call successors, (117), 22 states have call predecessors, (117), 22 states have return successors, (117), 107 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-16 15:39:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1423 transitions. [2023-12-16 15:39:43,257 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1423 transitions. Word has length 113 [2023-12-16 15:39:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 15:39:43,260 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1423 transitions. [2023-12-16 15:39:43,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1423 transitions. [2023-12-16 15:39:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 15:39:43,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 15:39:43,261 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:43,275 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 15:39:43,470 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 15:39:43,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 15:39:43,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 15:39:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash 519920954, now seen corresponding path program 1 times [2023-12-16 15:39:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 15:39:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885689145] [2023-12-16 15:39:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 15:39:43,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 15:39:43,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 15:39:43,473 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 15:39:43,509 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 15:39:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 15:39:43,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 15:39:43,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 15:39:43,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 15:39:43,764 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 95 treesize of output 35 [2023-12-16 15:39:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-16 15:39:44,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 15:39:44,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 15:39:44,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885689145] [2023-12-16 15:39:44,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885689145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 15:39:44,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 15:39:44,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 15:39:44,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043658262] [2023-12-16 15:39:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 15:39:44,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 15:39:44,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 15:39:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 15:39:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:39:44,849 INFO L87 Difference]: Start difference. First operand 1043 states and 1423 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 15:39:48,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-16 15:39:52,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-16 15:39:53,570 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 15:39:53,576 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 15:39:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 15:39:53,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 15:39:53,653 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-16 15:39:53,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 25 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2023-12-16 15:39:53,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 15:39:53,664 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 15:39:53,855 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 15:39:53,856 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1043states) and FLOYD_HOARE automaton (currently 3 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). [2023-12-16 15:39:53,861 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 15:39:53,864 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 15:39:53,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:39:53 BoogieIcfgContainer [2023-12-16 15:39:53,867 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 15:39:53,868 INFO L158 Benchmark]: Toolchain (without parser) took 66910.89ms. Allocated memory was 224.4MB in the beginning and 276.8MB in the end (delta: 52.4MB). Free memory was 178.1MB in the beginning and 230.3MB in the end (delta: -52.2MB). Peak memory consumption was 944.5kB. Max. memory is 8.0GB. [2023-12-16 15:39:53,868 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 184.5MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:39:53,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.21ms. Allocated memory is still 224.4MB. Free memory was 178.1MB in the beginning and 162.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 15:39:53,869 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.02ms. Allocated memory is still 224.4MB. Free memory was 162.4MB in the beginning and 159.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 15:39:53,869 INFO L158 Benchmark]: Boogie Preprocessor took 85.51ms. Allocated memory is still 224.4MB. Free memory was 159.7MB in the beginning and 154.6MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 15:39:53,869 INFO L158 Benchmark]: RCFGBuilder took 824.14ms. Allocated memory is still 224.4MB. Free memory was 154.6MB in the beginning and 117.7MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-16 15:39:53,870 INFO L158 Benchmark]: TraceAbstraction took 65561.63ms. Allocated memory was 224.4MB in the beginning and 276.8MB in the end (delta: 52.4MB). Free memory was 116.8MB in the beginning and 230.3MB in the end (delta: -113.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 15:39:53,872 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 184.5MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 360.21ms. Allocated memory is still 224.4MB. Free memory was 178.1MB in the beginning and 162.4MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 73.02ms. Allocated memory is still 224.4MB. Free memory was 162.4MB in the beginning and 159.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 85.51ms. Allocated memory is still 224.4MB. Free memory was 159.7MB in the beginning and 154.6MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 824.14ms. Allocated memory is still 224.4MB. Free memory was 154.6MB in the beginning and 117.7MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 65561.63ms. Allocated memory was 224.4MB in the beginning and 276.8MB in the end (delta: 52.4MB). Free memory was 116.8MB in the beginning and 230.3MB in the end (delta: -113.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (1043states) and FLOYD_HOARE automaton (currently 3 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.5s, OverallIterations: 13, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 2707 SdHoareTripleChecker+Valid, 25.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2707 mSDsluCounter, 6864 SdHoareTripleChecker+Invalid, 24.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5280 mSDsCounter, 248 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1961 IncrementalHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 248 mSolverCounterUnsat, 1584 mSDtfsCounter, 1961 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1999 GetRequests, 1830 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred in iteration=12, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 1467 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 22.7s InterpolantComputationTime, 1553 NumberOfCodeBlocks, 1553 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1872 ConstructedInterpolants, 120 QuantifiedInterpolants, 16294 SizeOfPredicates, 113 NumberOfNonLiveVariables, 3603 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 5451/6188 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