/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-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 15:11:17,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 15:11:18,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 15:11:18,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 15:11:18,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 15:11:18,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 15:11:18,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 15:11:18,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 15:11:18,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 15:11:18,118 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 15:11:18,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 15:11:18,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 15:11:18,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 15:11:18,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 15:11:18,121 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 15:11:18,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 15:11:18,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 15:11:18,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 15:11:18,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 15:11:18,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 15:11:18,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 15:11:18,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 15:11:18,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 15:11:18,123 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 15:11:18,123 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 15:11:18,123 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 15:11:18,124 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 15:11:18,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 15:11:18,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 15:11:18,124 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 15:11:18,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 15:11:18,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 15:11:18,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 15:11:18,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 15:11:18,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:11:18,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 15:11:18,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 15:11:18,126 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 15:11:18,126 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 15:11:18,126 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 15:11:18,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 15:11:18,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 15:11:18,127 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 15:11:18,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 15:11:18,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 15:11:18,128 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 15:11:18,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 15:11:18,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 15:11:18,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 15:11:18,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 15:11:18,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 15:11:18,397 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 15:11:18,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-56.i [2023-12-24 15:11:19,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 15:11:19,809 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 15:11:19,809 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-56.i [2023-12-24 15:11:19,820 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b482f8c5/43373e05382a45e9ba422abbc7980ba0/FLAGfadc64c64 [2023-12-24 15:11:19,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b482f8c5/43373e05382a45e9ba422abbc7980ba0 [2023-12-24 15:11:19,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 15:11:19,840 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 15:11:19,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 15:11:19,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 15:11:19,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 15:11:19,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:11:19" (1/1) ... [2023-12-24 15:11:19,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a71e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:19, skipping insertion in model container [2023-12-24 15:11:19,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 03:11:19" (1/1) ... [2023-12-24 15:11:19,892 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 15:11:20,029 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-56.i[917,930] [2023-12-24 15:11:20,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:11:20,107 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 15:11:20,117 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-56.i[917,930] [2023-12-24 15:11:20,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 15:11:20,197 INFO L206 MainTranslator]: Completed translation [2023-12-24 15:11:20,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20 WrapperNode [2023-12-24 15:11:20,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 15:11:20,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 15:11:20,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 15:11:20,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 15:11:20,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,263 INFO L138 Inliner]: procedures = 30, calls = 181, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 560 [2023-12-24 15:11:20,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 15:11:20,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 15:11:20,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 15:11:20,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 15:11:20,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,305 INFO L175 MemorySlicer]: Split 147 memory accesses to 5 slices as follows [2, 41, 11, 16, 77]. 52 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 5, 2, 1, 6]. The 18 writes are split as follows [0, 8, 2, 1, 7]. [2023-12-24 15:11:20,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 15:11:20,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 15:11:20,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 15:11:20,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 15:11:20,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (1/1) ... [2023-12-24 15:11:20,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 15:11:20,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 15:11:20,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 15:11:20,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 15:11:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 15:11:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 15:11:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 15:11:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 15:11:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 15:11:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 15:11:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 15:11:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 15:11:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 15:11:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 15:11:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 15:11:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 15:11:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 15:11:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 15:11:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 15:11:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 15:11:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 15:11:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 15:11:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 15:11:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 15:11:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 15:11:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 15:11:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 15:11:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 15:11:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 15:11:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 15:11:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 15:11:20,440 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 15:11:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 15:11:20,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 15:11:20,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 15:11:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 15:11:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 15:11:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 15:11:20,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 15:11:20,601 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 15:11:20,603 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 15:11:21,291 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 15:11:21,367 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 15:11:21,367 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 15:11:21,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:11:21 BoogieIcfgContainer [2023-12-24 15:11:21,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 15:11:21,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 15:11:21,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 15:11:21,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 15:11:21,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 03:11:19" (1/3) ... [2023-12-24 15:11:21,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa686a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:11:21, skipping insertion in model container [2023-12-24 15:11:21,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 03:11:20" (2/3) ... [2023-12-24 15:11:21,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa686a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 03:11:21, skipping insertion in model container [2023-12-24 15:11:21,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 03:11:21" (3/3) ... [2023-12-24 15:11:21,376 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-56.i [2023-12-24 15:11:21,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 15:11:21,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 15:11:21,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 15:11:21,450 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;@2fa38a56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 15:11:21,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 15:11:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 15:11:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:11:21,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:21,474 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:21,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:21,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1644303167, now seen corresponding path program 1 times [2023-12-24 15:11:21,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:21,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357193676] [2023-12-24 15:11:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:21,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:21,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:21,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:21,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 15:11:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:21,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 15:11:21,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 15:11:21,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:11:21,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357193676] [2023-12-24 15:11:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357193676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:11:21,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:11:21,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 15:11:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067981765] [2023-12-24 15:11:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 15:11:21,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 15:11:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:11:21,927 INFO L87 Difference]: Start difference. First operand has 111 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 15:11:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:21,989 INFO L93 Difference]: Finished difference Result 219 states and 353 transitions. [2023-12-24 15:11:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 15:11:21,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2023-12-24 15:11:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:21,998 INFO L225 Difference]: With dead ends: 219 [2023-12-24 15:11:21,998 INFO L226 Difference]: Without dead ends: 109 [2023-12-24 15:11:22,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 15:11:22,004 INFO L413 NwaCegarLoop]: 159 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, 159 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:22,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:11:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-24 15:11:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-24 15:11:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 15:11:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 163 transitions. [2023-12-24 15:11:22,041 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 163 transitions. Word has length 144 [2023-12-24 15:11:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:22,042 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 163 transitions. [2023-12-24 15:11:22,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 15:11:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 163 transitions. [2023-12-24 15:11:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:11:22,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:22,046 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:22,052 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 [2023-12-24 15:11:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:22,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1338828859, now seen corresponding path program 1 times [2023-12-24 15:11:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:22,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382397391] [2023-12-24 15:11:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:22,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:22,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:22,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 15:11:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:22,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 15:11:22,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:11:22,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:11:22,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:22,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382397391] [2023-12-24 15:11:22,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382397391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:11:22,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:11:22,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 15:11:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113011809] [2023-12-24 15:11:22,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 15:11:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 15:11:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:11:22,543 INFO L87 Difference]: Start difference. First operand 109 states and 163 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:22,602 INFO L93 Difference]: Finished difference Result 218 states and 327 transitions. [2023-12-24 15:11:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 15:11:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2023-12-24 15:11:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:22,609 INFO L225 Difference]: With dead ends: 218 [2023-12-24 15:11:22,610 INFO L226 Difference]: Without dead ends: 110 [2023-12-24 15:11:22,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 15:11:22,612 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:22,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:11:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-24 15:11:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-24 15:11:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 89 states have (on average 1.4157303370786516) internal successors, (126), 89 states have internal predecessors, (126), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 15:11:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 164 transitions. [2023-12-24 15:11:22,625 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 164 transitions. Word has length 144 [2023-12-24 15:11:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:22,627 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 164 transitions. [2023-12-24 15:11:22,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 164 transitions. [2023-12-24 15:11:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:11:22,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:22,630 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:22,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 15:11:22,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:22,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:22,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 961993731, now seen corresponding path program 1 times [2023-12-24 15:11:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:22,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176053377] [2023-12-24 15:11:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:22,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:22,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:22,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:22,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 15:11:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:23,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 15:11:23,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:23,279 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 [2023-12-24 15:11:24,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 15:11:24,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-24 15:11:24,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 15:11:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 35 proven. 384 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 15:11:24,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:11:25,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176053377] [2023-12-24 15:11:25,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176053377] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:11:25,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:11:25,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20] total 26 [2023-12-24 15:11:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383264114] [2023-12-24 15:11:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 15:11:25,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 15:11:25,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2023-12-24 15:11:25,077 INFO L87 Difference]: Start difference. First operand 110 states and 164 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:25,773 INFO L93 Difference]: Finished difference Result 346 states and 516 transitions. [2023-12-24 15:11:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 15:11:25,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2023-12-24 15:11:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:25,777 INFO L225 Difference]: With dead ends: 346 [2023-12-24 15:11:25,777 INFO L226 Difference]: Without dead ends: 237 [2023-12-24 15:11:25,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2023-12-24 15:11:25,779 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 283 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:25,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1348 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 15:11:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-24 15:11:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 190. [2023-12-24 15:11:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 159 states have (on average 1.4276729559748427) internal successors, (227), 160 states have internal predecessors, (227), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-24 15:11:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 283 transitions. [2023-12-24 15:11:25,824 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 283 transitions. Word has length 144 [2023-12-24 15:11:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:25,825 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 283 transitions. [2023-12-24 15:11:25,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 283 transitions. [2023-12-24 15:11:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 15:11:25,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:25,828 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:25,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 15:11:26,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:26,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:26,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1779642181, now seen corresponding path program 1 times [2023-12-24 15:11:26,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:26,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62251515] [2023-12-24 15:11:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:26,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:26,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:26,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:26,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 15:11:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:26,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 15:11:26,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:26,570 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 17 treesize of output 9 [2023-12-24 15:11:29,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 15:11:29,192 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-12-24 15:11:29,192 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 33 treesize of output 43 [2023-12-24 15:11:29,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:11:29,338 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 33 treesize of output 21 [2023-12-24 15:11:29,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 15:11:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 35 proven. 384 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 15:11:29,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:29,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2023-12-24 15:11:30,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62251515] [2023-12-24 15:11:30,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62251515] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:11:30,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1946347795] [2023-12-24 15:11:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:30,032 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:11:30,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:11:30,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:11:30,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 15:11:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:30,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 15:11:30,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:30,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:11:32,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-12-24 15:11:32,619 INFO L349 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2023-12-24 15:11:32,619 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 33 treesize of output 39 [2023-12-24 15:11:32,838 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 33 treesize of output 21 [2023-12-24 15:11:32,852 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 39 treesize of output 27 [2023-12-24 15:11:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:11:32,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:11:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1946347795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:11:32,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:11:32,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 28 [2023-12-24 15:11:32,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989608852] [2023-12-24 15:11:32,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:32,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 15:11:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 15:11:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 15:11:32,914 INFO L87 Difference]: Start difference. First operand 190 states and 283 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:35,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:35,853 INFO L93 Difference]: Finished difference Result 945 states and 1408 transitions. [2023-12-24 15:11:35,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 15:11:35,855 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2023-12-24 15:11:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:35,866 INFO L225 Difference]: With dead ends: 945 [2023-12-24 15:11:35,866 INFO L226 Difference]: Without dead ends: 756 [2023-12-24 15:11:35,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=684, Invalid=3098, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 15:11:35,875 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1772 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:35,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 1497 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 15:11:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-24 15:11:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 409. [2023-12-24 15:11:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 348 states have (on average 1.456896551724138) internal successors, (507), 350 states have internal predecessors, (507), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:11:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 619 transitions. [2023-12-24 15:11:35,958 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 619 transitions. Word has length 144 [2023-12-24 15:11:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:35,959 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 619 transitions. [2023-12-24 15:11:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 619 transitions. [2023-12-24 15:11:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:11:35,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:35,968 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:35,976 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 [2023-12-24 15:11:36,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-24 15:11:36,377 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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:11:36,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:36,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1384488933, now seen corresponding path program 1 times [2023-12-24 15:11:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:36,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450067691] [2023-12-24 15:11:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:36,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:36,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:36,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 15:11:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:36,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 15:11:36,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:36,621 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 [2023-12-24 15:11:37,557 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 22 treesize of output 14 [2023-12-24 15:11:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 35 proven. 384 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 15:11:37,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:11:37,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450067691] [2023-12-24 15:11:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450067691] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:11:37,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:11:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 15:11:37,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237448559] [2023-12-24 15:11:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:37,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:11:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:11:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-24 15:11:37,736 INFO L87 Difference]: Start difference. First operand 409 states and 619 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:37,847 INFO L93 Difference]: Finished difference Result 903 states and 1368 transitions. [2023-12-24 15:11:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:11:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 15:11:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:37,851 INFO L225 Difference]: With dead ends: 903 [2023-12-24 15:11:37,851 INFO L226 Difference]: Without dead ends: 495 [2023-12-24 15:11:37,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-24 15:11:37,853 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 200 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:37,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 463 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 15:11:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-24 15:11:37,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 416. [2023-12-24 15:11:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 355 states have (on average 1.4507042253521127) internal successors, (515), 357 states have internal predecessors, (515), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:11:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 627 transitions. [2023-12-24 15:11:37,882 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 627 transitions. Word has length 145 [2023-12-24 15:11:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:37,883 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 627 transitions. [2023-12-24 15:11:37,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 627 transitions. [2023-12-24 15:11:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 15:11:37,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:37,885 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:37,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 15:11:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:38,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:38,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash 326605127, now seen corresponding path program 1 times [2023-12-24 15:11:38,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:38,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567720530] [2023-12-24 15:11:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:38,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:38,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:38,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:38,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 15:11:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:38,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 15:11:38,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:38,321 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 [2023-12-24 15:11:38,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 15:11:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 15:11:38,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:11:38,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:38,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567720530] [2023-12-24 15:11:38,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567720530] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 15:11:38,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 15:11:38,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-24 15:11:38,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151657969] [2023-12-24 15:11:38,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:11:38,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:11:38,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:11:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:11:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-24 15:11:38,955 INFO L87 Difference]: Start difference. First operand 416 states and 627 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:11:39,149 INFO L93 Difference]: Finished difference Result 878 states and 1321 transitions. [2023-12-24 15:11:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 15:11:39,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 15:11:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:11:39,152 INFO L225 Difference]: With dead ends: 878 [2023-12-24 15:11:39,153 INFO L226 Difference]: Without dead ends: 463 [2023-12-24 15:11:39,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-24 15:11:39,154 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 120 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 15:11:39,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 720 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 15:11:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-12-24 15:11:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 411. [2023-12-24 15:11:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 350 states have (on average 1.4428571428571428) internal successors, (505), 352 states have internal predecessors, (505), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:11:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 617 transitions. [2023-12-24 15:11:39,181 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 617 transitions. Word has length 145 [2023-12-24 15:11:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:11:39,181 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 617 transitions. [2023-12-24 15:11:39,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:11:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 617 transitions. [2023-12-24 15:11:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:11:39,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:11:39,183 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:11:39,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 15:11:39,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:39,394 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:11:39,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:11:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash 152481161, now seen corresponding path program 1 times [2023-12-24 15:11:39,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:11:39,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272308593] [2023-12-24 15:11:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:39,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:11:39,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:11:39,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:11:39,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 15:11:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:39,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-24 15:11:39,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:44,134 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 [2023-12-24 15:11:45,282 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 38 treesize of output 36 [2023-12-24 15:11:46,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 15:11:48,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 59 [2023-12-24 15:11:51,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 95 [2023-12-24 15:11:53,113 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 51 treesize of output 39 [2023-12-24 15:11:53,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:11:53,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 79 [2023-12-24 15:11:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 91 proven. 437 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 15:11:53,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:11:57,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:11:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272308593] [2023-12-24 15:11:57,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272308593] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:11:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1987079386] [2023-12-24 15:11:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:11:57,542 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:11:57,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:11:57,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:11:57,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 15:11:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:11:58,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 15:11:58,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:11:58,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:12:00,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:12:01,261 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 33 treesize of output 17 [2023-12-24 15:12:04,333 INFO L349 Elim1Store]: treesize reduction 42, result has 35.4 percent of original size [2023-12-24 15:12:04,334 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 81 treesize of output 71 [2023-12-24 15:12:05,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:12:05,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 218 treesize of output 186 [2023-12-24 15:12:06,533 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 181 treesize of output 161 [2023-12-24 15:12:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 124 proven. 139 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-12-24 15:12:07,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:12:10,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 57 [2023-12-24 15:12:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1987079386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:12:11,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:12:11,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 24] total 65 [2023-12-24 15:12:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961410328] [2023-12-24 15:12:11,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:12:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-24 15:12:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:12:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-24 15:12:11,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=7362, Unknown=0, NotChecked=0, Total=7832 [2023-12-24 15:12:11,109 INFO L87 Difference]: Start difference. First operand 411 states and 617 transitions. Second operand has 66 states, 58 states have (on average 2.4655172413793105) internal successors, (143), 57 states have internal predecessors, (143), 16 states have call successors, (38), 11 states have call predecessors, (38), 16 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-24 15:12:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:12:55,261 INFO L93 Difference]: Finished difference Result 1130 states and 1667 transitions. [2023-12-24 15:12:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-24 15:12:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 58 states have (on average 2.4655172413793105) internal successors, (143), 57 states have internal predecessors, (143), 16 states have call successors, (38), 11 states have call predecessors, (38), 16 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) Word has length 146 [2023-12-24 15:12:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:12:55,265 INFO L225 Difference]: With dead ends: 1130 [2023-12-24 15:12:55,265 INFO L226 Difference]: Without dead ends: 720 [2023-12-24 15:12:55,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5288 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=2566, Invalid=19486, Unknown=0, NotChecked=0, Total=22052 [2023-12-24 15:12:55,272 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 2600 mSDsluCounter, 8358 mSDsCounter, 0 mSdLazyCounter, 6801 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 8566 SdHoareTripleChecker+Invalid, 7259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 6801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:12:55,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 8566 Invalid, 7259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [458 Valid, 6801 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2023-12-24 15:12:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-12-24 15:12:55,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 456. [2023-12-24 15:12:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 389 states have (on average 1.429305912596401) internal successors, (556), 391 states have internal predecessors, (556), 56 states have call successors, (56), 10 states have call predecessors, (56), 10 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:12:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 668 transitions. [2023-12-24 15:12:55,318 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 668 transitions. Word has length 146 [2023-12-24 15:12:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:12:55,318 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 668 transitions. [2023-12-24 15:12:55,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 58 states have (on average 2.4655172413793105) internal successors, (143), 57 states have internal predecessors, (143), 16 states have call successors, (38), 11 states have call predecessors, (38), 16 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-24 15:12:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 668 transitions. [2023-12-24 15:12:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:12:55,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:12:55,320 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:12:55,337 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 [2023-12-24 15:12:55,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 15:12:55,729 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=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:12:55,730 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:12:55,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:12:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash 970129611, now seen corresponding path program 1 times [2023-12-24 15:12:55,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:12:55,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851814718] [2023-12-24 15:12:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:12:55,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:12:55,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:12:55,732 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:12:55,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 15:12:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:12:56,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-24 15:12:56,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:12:56,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:13:00,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 15:13:00,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 15:13:02,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 55 [2023-12-24 15:13:02,657 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 66 treesize of output 63 [2023-12-24 15:13:03,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2023-12-24 15:13:03,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:13:03,179 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 85 treesize of output 49 [2023-12-24 15:13:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 52 proven. 434 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-24 15:13:03,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:13:14,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:13:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851814718] [2023-12-24 15:13:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851814718] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:13:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2037858859] [2023-12-24 15:13:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:13:14,737 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:13:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:13:14,738 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:13:14,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 15:13:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:13:15,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-24 15:13:15,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:13:15,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:13:18,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:13:19,750 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 33 treesize of output 17 [2023-12-24 15:13:22,933 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 81 treesize of output 63 [2023-12-24 15:13:23,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 71 [2023-12-24 15:13:24,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2023-12-24 15:13:24,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 58 [2023-12-24 15:13:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 124 proven. 139 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-12-24 15:13:24,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:14:06,156 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 242 treesize of output 230 [2023-12-24 15:14:07,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2037858859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:14:07,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:14:07,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23] total 50 [2023-12-24 15:14:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105922757] [2023-12-24 15:14:07,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:14:07,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-24 15:14:07,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:14:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-24 15:14:07,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=3986, Unknown=9, NotChecked=0, Total=4422 [2023-12-24 15:14:07,794 INFO L87 Difference]: Start difference. First operand 456 states and 668 transitions. Second operand has 51 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 44 states have internal predecessors, (127), 12 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 9 states have call predecessors, (38), 12 states have call successors, (38) [2023-12-24 15:14:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:14:46,616 INFO L93 Difference]: Finished difference Result 1104 states and 1615 transitions. [2023-12-24 15:14:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-24 15:14:46,617 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 44 states have internal predecessors, (127), 12 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 9 states have call predecessors, (38), 12 states have call successors, (38) Word has length 146 [2023-12-24 15:14:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:14:46,621 INFO L225 Difference]: With dead ends: 1104 [2023-12-24 15:14:46,621 INFO L226 Difference]: Without dead ends: 904 [2023-12-24 15:14:46,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3447 ImplicationChecksByTransitivity, 77.7s TimeCoverageRelationStatistics Valid=2110, Invalid=11923, Unknown=9, NotChecked=0, Total=14042 [2023-12-24 15:14:46,625 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 4138 mSDsluCounter, 8623 mSDsCounter, 0 mSdLazyCounter, 6843 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 8928 SdHoareTripleChecker+Invalid, 7439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 6843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-12-24 15:14:46,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4138 Valid, 8928 Invalid, 7439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [596 Valid, 6843 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2023-12-24 15:14:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-12-24 15:14:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 475. [2023-12-24 15:14:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 408 states have (on average 1.4338235294117647) internal successors, (585), 410 states have internal predecessors, (585), 56 states have call successors, (56), 10 states have call predecessors, (56), 10 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 15:14:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 697 transitions. [2023-12-24 15:14:46,677 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 697 transitions. Word has length 146 [2023-12-24 15:14:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:14:46,677 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 697 transitions. [2023-12-24 15:14:46,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 2.8222222222222224) internal successors, (127), 44 states have internal predecessors, (127), 12 states have call successors, (38), 9 states have call predecessors, (38), 12 states have return successors, (38), 9 states have call predecessors, (38), 12 states have call successors, (38) [2023-12-24 15:14:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 697 transitions. [2023-12-24 15:14:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:14:46,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:14:46,680 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:14:46,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:46,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 15:14:47,088 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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:47,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:14:47,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:14:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1228295049, now seen corresponding path program 1 times [2023-12-24 15:14:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:14:47,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062725019] [2023-12-24 15:14:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:47,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:14:47,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:14:47,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:14:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 15:14:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:47,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 15:14:47,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:14:50,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:14:50,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 15:14:51,801 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 [2023-12-24 15:14:52,828 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 54 treesize of output 51 [2023-12-24 15:14:52,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 59 [2023-12-24 15:14:53,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:14:53,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 36 [2023-12-24 15:14:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 162 proven. 139 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-12-24 15:14:53,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:14:58,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:14:58,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062725019] [2023-12-24 15:14:58,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062725019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:14:58,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1527409466] [2023-12-24 15:14:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:14:58,573 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:14:58,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:14:58,574 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:14:58,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 15:14:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:14:59,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 15:14:59,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:02,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:15:03,071 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 25 treesize of output 13 [2023-12-24 15:15:04,037 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 31 treesize of output 33 [2023-12-24 15:15:05,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2023-12-24 15:15:05,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 59 [2023-12-24 15:15:05,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 35 [2023-12-24 15:15:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 162 proven. 139 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-12-24 15:15:06,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:06,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1527409466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:06,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:15:06,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2023-12-24 15:15:06,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193161973] [2023-12-24 15:15:06,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:15:06,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 15:15:06,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:06,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 15:15:06,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1229, Unknown=1, NotChecked=0, Total=1406 [2023-12-24 15:15:06,173 INFO L87 Difference]: Start difference. First operand 475 states and 697 transitions. Second operand has 32 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 10 states have call successors, (38), 6 states have call predecessors, (38), 10 states have return successors, (38), 9 states have call predecessors, (38), 10 states have call successors, (38) [2023-12-24 15:15:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:14,684 INFO L93 Difference]: Finished difference Result 1416 states and 2055 transitions. [2023-12-24 15:15:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 15:15:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 10 states have call successors, (38), 6 states have call predecessors, (38), 10 states have return successors, (38), 9 states have call predecessors, (38), 10 states have call successors, (38) Word has length 146 [2023-12-24 15:15:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:14,690 INFO L225 Difference]: With dead ends: 1416 [2023-12-24 15:15:14,690 INFO L226 Difference]: Without dead ends: 942 [2023-12-24 15:15:14,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=703, Invalid=3078, Unknown=1, NotChecked=0, Total=3782 [2023-12-24 15:15:14,693 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1764 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:14,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 2385 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-24 15:15:14,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-24 15:15:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 674. [2023-12-24 15:15:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 581 states have (on average 1.4268502581755593) internal successors, (829), 585 states have internal predecessors, (829), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 74 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 15:15:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 985 transitions. [2023-12-24 15:15:14,773 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 985 transitions. Word has length 146 [2023-12-24 15:15:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:14,773 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 985 transitions. [2023-12-24 15:15:14,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 10 states have call successors, (38), 6 states have call predecessors, (38), 10 states have return successors, (38), 9 states have call predecessors, (38), 10 states have call successors, (38) [2023-12-24 15:15:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 985 transitions. [2023-12-24 15:15:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:15:14,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:14,776 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:14,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 15:15:14,990 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 [2023-12-24 15:15:15,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:15,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:15,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:15,184 INFO L85 PathProgramCache]: Analyzing trace with hash 18467655, now seen corresponding path program 1 times [2023-12-24 15:15:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284707752] [2023-12-24 15:15:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:15,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:15,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:15,186 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:15:15,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 15:15:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:15,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 15:15:15,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:15,473 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-12-24 15:15:15,473 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 32 treesize of output 25 [2023-12-24 15:15:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:15:15,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:15:15,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284707752] [2023-12-24 15:15:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284707752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:15:15,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:15:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:15:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424405240] [2023-12-24 15:15:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:15:15,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:15:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:15:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:15:15,500 INFO L87 Difference]: Start difference. First operand 674 states and 985 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:15:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:15,973 INFO L93 Difference]: Finished difference Result 1373 states and 1997 transitions. [2023-12-24 15:15:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 15:15:15,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 15:15:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:15,977 INFO L225 Difference]: With dead ends: 1373 [2023-12-24 15:15:15,977 INFO L226 Difference]: Without dead ends: 700 [2023-12-24 15:15:15,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 15:15:15,979 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 63 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:15,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 510 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 15:15:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-24 15:15:16,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 656. [2023-12-24 15:15:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 563 states have (on average 1.4209591474245116) internal successors, (800), 567 states have internal predecessors, (800), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 74 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 15:15:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 956 transitions. [2023-12-24 15:15:16,069 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 956 transitions. Word has length 146 [2023-12-24 15:15:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:16,069 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 956 transitions. [2023-12-24 15:15:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:15:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 956 transitions. [2023-12-24 15:15:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:15:16,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:16,071 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:16,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-24 15:15:16,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:16,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:16,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2001984894, now seen corresponding path program 1 times [2023-12-24 15:15:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:16,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681289876] [2023-12-24 15:15:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:16,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:16,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:16,278 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:15:16,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 15:15:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:16,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 15:15:16,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 15:15:16,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 15:15:16,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:16,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681289876] [2023-12-24 15:15:16,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681289876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 15:15:16,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 15:15:16,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 15:15:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508781283] [2023-12-24 15:15:16,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 15:15:16,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 15:15:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 15:15:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 15:15:16,515 INFO L87 Difference]: Start difference. First operand 656 states and 956 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:15:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:15:16,636 INFO L93 Difference]: Finished difference Result 1401 states and 2043 transitions. [2023-12-24 15:15:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 15:15:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 15:15:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:15:16,640 INFO L225 Difference]: With dead ends: 1401 [2023-12-24 15:15:16,640 INFO L226 Difference]: Without dead ends: 746 [2023-12-24 15:15:16,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 15:15:16,642 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 54 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 15:15:16,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 631 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 15:15:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-24 15:15:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 674. [2023-12-24 15:15:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 581 states have (on average 1.4079173838209982) internal successors, (818), 585 states have internal predecessors, (818), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 74 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 15:15:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 974 transitions. [2023-12-24 15:15:16,727 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 974 transitions. Word has length 146 [2023-12-24 15:15:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:15:16,727 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 974 transitions. [2023-12-24 15:15:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 15:15:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 974 transitions. [2023-12-24 15:15:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:15:16,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:15:16,730 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:15:16,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 15:15:16,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:16,937 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:15:16,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:15:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 311558473, now seen corresponding path program 1 times [2023-12-24 15:15:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:15:16,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659704037] [2023-12-24 15:15:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:16,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:15:16,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:15:16,939 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:15:16,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 15:15:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:17,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 15:15:17,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:17,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:15:21,857 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 [2023-12-24 15:15:22,702 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 25 treesize of output 13 [2023-12-24 15:15:24,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2023-12-24 15:15:24,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2023-12-24 15:15:24,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:15:24,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 43 [2023-12-24 15:15:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 52 proven. 434 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-24 15:15:25,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:27,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:15:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659704037] [2023-12-24 15:15:27,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659704037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1437781237] [2023-12-24 15:15:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:15:27,323 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:15:27,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:15:27,324 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:15:27,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-24 15:15:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:15:27,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 15:15:27,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:15:28,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:15:30,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:15:31,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 15:15:33,908 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 46 treesize of output 44 [2023-12-24 15:15:34,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2023-12-24 15:15:35,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2023-12-24 15:15:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 49 proven. 139 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 15:15:36,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:15:39,630 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 160 treesize of output 128 [2023-12-24 15:15:40,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1437781237] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:15:40,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 15:15:40,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 50 [2023-12-24 15:15:40,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331018832] [2023-12-24 15:15:40,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 15:15:40,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-24 15:15:40,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 15:15:40,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-24 15:15:40,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=4521, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 15:15:40,676 INFO L87 Difference]: Start difference. First operand 674 states and 974 transitions. Second operand has 51 states, 45 states have (on average 2.8444444444444446) internal successors, (128), 44 states have internal predecessors, (128), 11 states have call successors, (38), 8 states have call predecessors, (38), 11 states have return successors, (38), 8 states have call predecessors, (38), 11 states have call successors, (38) [2023-12-24 15:16:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 15:16:13,129 INFO L93 Difference]: Finished difference Result 1747 states and 2509 transitions. [2023-12-24 15:16:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-24 15:16:13,130 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 2.8444444444444446) internal successors, (128), 44 states have internal predecessors, (128), 11 states have call successors, (38), 8 states have call predecessors, (38), 11 states have return successors, (38), 8 states have call predecessors, (38), 11 states have call successors, (38) Word has length 146 [2023-12-24 15:16:13,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 15:16:13,133 INFO L225 Difference]: With dead ends: 1747 [2023-12-24 15:16:13,133 INFO L226 Difference]: Without dead ends: 1074 [2023-12-24 15:16:13,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4110 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=2627, Invalid=16005, Unknown=0, NotChecked=0, Total=18632 [2023-12-24 15:16:13,137 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 3405 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 5766 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3405 SdHoareTripleChecker+Valid, 7584 SdHoareTripleChecker+Invalid, 6556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 5766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-24 15:16:13,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3405 Valid, 7584 Invalid, 6556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [790 Valid, 5766 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2023-12-24 15:16:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-12-24 15:16:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 678. [2023-12-24 15:16:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 585 states have (on average 1.4085470085470086) internal successors, (824), 589 states have internal predecessors, (824), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (78), 74 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 15:16:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 980 transitions. [2023-12-24 15:16:13,232 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 980 transitions. Word has length 146 [2023-12-24 15:16:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 15:16:13,232 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 980 transitions. [2023-12-24 15:16:13,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 2.8444444444444446) internal successors, (128), 44 states have internal predecessors, (128), 11 states have call successors, (38), 8 states have call predecessors, (38), 11 states have return successors, (38), 8 states have call predecessors, (38), 11 states have call successors, (38) [2023-12-24 15:16:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 980 transitions. [2023-12-24 15:16:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 15:16:13,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 15:16:13,234 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 15:16:13,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 15:16:13,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-24 15:16:13,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 15:16:13,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 15:16:13,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 15:16:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 92703755, now seen corresponding path program 1 times [2023-12-24 15:16:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 15:16:13,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741129575] [2023-12-24 15:16:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:16:13,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:16:13,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 15:16:13,644 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 15:16:13,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 15:16:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:16:14,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 15:16:14,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:16:14,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:16:19,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 15:16:20,637 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 30 treesize of output 25 [2023-12-24 15:16:22,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 59 [2023-12-24 15:16:22,890 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 73 treesize of output 66 [2023-12-24 15:16:23,534 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 44 treesize of output 32 [2023-12-24 15:16:23,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 15:16:23,800 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 56 treesize of output 28 [2023-12-24 15:16:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 72 proven. 434 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-24 15:16:24,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:16:31,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 15:16:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741129575] [2023-12-24 15:16:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741129575] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 15:16:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1727835912] [2023-12-24 15:16:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 15:16:31,582 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 15:16:31,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 15:16:31,583 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 15:16:31,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-24 15:16:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 15:16:32,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 15:16:32,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 15:16:32,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 15:16:36,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 15:16:37,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 15:16:39,764 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 64 treesize of output 54 [2023-12-24 15:16:40,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 62 [2023-12-24 15:16:40,749 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 47 treesize of output 35 [2023-12-24 15:16:41,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 48 [2023-12-24 15:16:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 49 proven. 139 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 15:16:41,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 15:17:24,959 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 152 treesize of output 140 [2023-12-24 15:19:37,759 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-24 15:19:37,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-12-24 15:19:37,760 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-24 15:19:37,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-24 15:19:37,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 15:19:38,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 15:19:38,162 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:845) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 46 more [2023-12-24 15:19:38,165 INFO L158 Benchmark]: Toolchain (without parser) took 498325.83ms. Allocated memory was 254.8MB in the beginning and 531.6MB in the end (delta: 276.8MB). Free memory was 208.3MB in the beginning and 268.3MB in the end (delta: -60.0MB). Peak memory consumption was 217.8MB. Max. memory is 8.0GB. [2023-12-24 15:19:38,165 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 177.2MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 15:19:38,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.73ms. Allocated memory is still 254.8MB. Free memory was 208.0MB in the beginning and 191.4MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 15:19:38,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.11ms. Allocated memory is still 254.8MB. Free memory was 191.4MB in the beginning and 187.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 15:19:38,166 INFO L158 Benchmark]: Boogie Preprocessor took 91.71ms. Allocated memory is still 254.8MB. Free memory was 187.7MB in the beginning and 182.1MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 15:19:38,166 INFO L158 Benchmark]: RCFGBuilder took 1011.12ms. Allocated memory is still 254.8MB. Free memory was 182.1MB in the beginning and 207.4MB in the end (delta: -25.3MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-24 15:19:38,166 INFO L158 Benchmark]: TraceAbstraction took 496794.89ms. Allocated memory was 254.8MB in the beginning and 531.6MB in the end (delta: 276.8MB). Free memory was 206.4MB in the beginning and 268.3MB in the end (delta: -61.9MB). Peak memory consumption was 215.7MB. Max. memory is 8.0GB. [2023-12-24 15:19:38,167 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 177.2MB. Free memory is still 133.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 355.73ms. Allocated memory is still 254.8MB. Free memory was 208.0MB in the beginning and 191.4MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.11ms. Allocated memory is still 254.8MB. Free memory was 191.4MB in the beginning and 187.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 91.71ms. Allocated memory is still 254.8MB. Free memory was 187.7MB in the beginning and 182.1MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1011.12ms. Allocated memory is still 254.8MB. Free memory was 182.1MB in the beginning and 207.4MB in the end (delta: -25.3MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 496794.89ms. Allocated memory was 254.8MB in the beginning and 531.6MB in the end (delta: 276.8MB). Free memory was 206.4MB in the beginning and 268.3MB in the end (delta: -61.9MB). Peak memory consumption was 215.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...