/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-a_file-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 12:57:44,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 12:57:44,314 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 12:57:44,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 12:57:44,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 12:57:44,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 12:57:44,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 12:57:44,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 12:57:44,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 12:57:44,344 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 12:57:44,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 12:57:44,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 12:57:44,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 12:57:44,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 12:57:44,345 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 12:57:44,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 12:57:44,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 12:57:44,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 12:57:44,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 12:57:44,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 12:57:44,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 12:57:44,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 12:57:44,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 12:57:44,348 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 12:57:44,348 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 12:57:44,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 12:57:44,348 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 12:57:44,348 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 12:57:44,349 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 12:57:44,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 12:57:44,350 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 12:57:44,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 12:57:44,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 12:57:44,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 12:57:44,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 12:57:44,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 12:57:44,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 12:57:44,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 12:57:44,351 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 12:57:44,351 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 12:57:44,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 12:57:44,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 12:57:44,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 12:57:44,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 12:57:44,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 12:57:44,352 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 12:57:44,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 12:57:44,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 12:57:44,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 12:57:44,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 12:57:44,580 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 12:57:44,581 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 12:57:44,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i [2023-12-24 12:57:45,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 12:57:45,862 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 12:57:45,862 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-2.i [2023-12-24 12:57:45,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734babb8a/396bcdcadb1442288af76af258ed5084/FLAGf6a3e08f7 [2023-12-24 12:57:45,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734babb8a/396bcdcadb1442288af76af258ed5084 [2023-12-24 12:57:45,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 12:57:45,885 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 12:57:45,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 12:57:45,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 12:57:45,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 12:57:45,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:57:45" (1/1) ... [2023-12-24 12:57:45,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568fa630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:45, skipping insertion in model container [2023-12-24 12:57:45,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:57:45" (1/1) ... [2023-12-24 12:57:45,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 12:57:46,029 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-a_file-2.i[915,928] [2023-12-24 12:57:46,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 12:57:46,079 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 12:57:46,086 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-a_file-2.i[915,928] [2023-12-24 12:57:46,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 12:57:46,132 INFO L206 MainTranslator]: Completed translation [2023-12-24 12:57:46,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46 WrapperNode [2023-12-24 12:57:46,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 12:57:46,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 12:57:46,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 12:57:46,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 12:57:46,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,175 INFO L138 Inliner]: procedures = 33, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 500 [2023-12-24 12:57:46,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 12:57:46,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 12:57:46,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 12:57:46,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 12:57:46,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,207 INFO L175 MemorySlicer]: Split 131 memory accesses to 4 slices as follows [2, 8, 31, 90]. 69 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 3, 6]. The 15 writes are split as follows [0, 1, 5, 9]. [2023-12-24 12:57:46,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 12:57:46,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 12:57:46,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 12:57:46,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 12:57:46,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (1/1) ... [2023-12-24 12:57:46,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 12:57:46,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 12:57:46,258 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 12:57:46,299 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 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 12:57:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 12:57:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 12:57:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 12:57:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 12:57:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 12:57:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 12:57:46,450 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 12:57:46,452 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 12:57:46,984 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 12:57:47,030 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 12:57:47,030 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 12:57:47,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:57:47 BoogieIcfgContainer [2023-12-24 12:57:47,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 12:57:47,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 12:57:47,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 12:57:47,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 12:57:47,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 12:57:45" (1/3) ... [2023-12-24 12:57:47,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e9670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:57:47, skipping insertion in model container [2023-12-24 12:57:47,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:57:46" (2/3) ... [2023-12-24 12:57:47,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e9670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:57:47, skipping insertion in model container [2023-12-24 12:57:47,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:57:47" (3/3) ... [2023-12-24 12:57:47,036 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-2.i [2023-12-24 12:57:47,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 12:57:47,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 12:57:47,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 12:57:47,090 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;@29a0307d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 12:57:47,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 12:57:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 78 states have (on average 1.5) internal successors, (117), 79 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 12:57:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 12:57:47,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:47,102 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:47,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:47,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:47,108 INFO L85 PathProgramCache]: Analyzing trace with hash -447108497, now seen corresponding path program 1 times [2023-12-24 12:57:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102530618] [2023-12-24 12:57:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:47,120 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 12:57:47,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:47,152 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 12:57:47,172 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 12:57:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:47,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 12:57:47,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-24 12:57:47,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:47,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:47,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102530618] [2023-12-24 12:57:47,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102530618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:47,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:47,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 12:57:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402363378] [2023-12-24 12:57:47,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:47,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 12:57:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 12:57:47,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 12:57:47,461 INFO L87 Difference]: Start difference. First operand has 93 states, 78 states have (on average 1.5) internal successors, (117), 79 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:57:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:47,502 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2023-12-24 12:57:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 12:57:47,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2023-12-24 12:57:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:47,510 INFO L225 Difference]: With dead ends: 183 [2023-12-24 12:57:47,510 INFO L226 Difference]: Without dead ends: 91 [2023-12-24 12:57:47,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 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 12:57:47,516 INFO L413 NwaCegarLoop]: 132 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, 132 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 12:57:47,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 12:57:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-24 12:57:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-24 12:57:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 12:57:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 136 transitions. [2023-12-24 12:57:47,551 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 136 transitions. Word has length 95 [2023-12-24 12:57:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:47,551 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 136 transitions. [2023-12-24 12:57:47,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:57:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 136 transitions. [2023-12-24 12:57:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 12:57:47,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:47,556 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:47,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 12:57:47,761 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 12:57:47,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:47,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1556513981, now seen corresponding path program 1 times [2023-12-24 12:57:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368078010] [2023-12-24 12:57:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:47,764 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 12:57:47,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:47,766 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 12:57:47,781 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 12:57:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:47,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 12:57:47,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 12:57:47,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:47,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368078010] [2023-12-24 12:57:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368078010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 12:57:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103246920] [2023-12-24 12:57:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 12:57:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 12:57:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 12:57:47,990 INFO L87 Difference]: Start difference. First operand 91 states and 136 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:57:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:48,044 INFO L93 Difference]: Finished difference Result 187 states and 280 transitions. [2023-12-24 12:57:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:57:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2023-12-24 12:57:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:48,045 INFO L225 Difference]: With dead ends: 187 [2023-12-24 12:57:48,045 INFO L226 Difference]: Without dead ends: 97 [2023-12-24 12:57:48,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:57:48,047 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 10 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:48,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 385 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 12:57:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-24 12:57:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-12-24 12:57:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 79 states have internal predecessors, (114), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 12:57:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2023-12-24 12:57:48,058 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 95 [2023-12-24 12:57:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:48,058 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2023-12-24 12:57:48,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:57:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2023-12-24 12:57:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-24 12:57:48,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:48,062 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:48,071 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 12:57:48,268 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 12:57:48,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:48,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:48,269 INFO L85 PathProgramCache]: Analyzing trace with hash -498675903, now seen corresponding path program 1 times [2023-12-24 12:57:48,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:48,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482320175] [2023-12-24 12:57:48,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:48,270 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 12:57:48,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:48,272 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 12:57:48,302 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 12:57:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:48,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 12:57:48,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:48,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:48,516 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 37 treesize of output 17 [2023-12-24 12:57:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:57:48,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:48,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482320175] [2023-12-24 12:57:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482320175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:48,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:48,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 12:57:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078727900] [2023-12-24 12:57:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:48,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 12:57:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 12:57:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 12:57:48,871 INFO L87 Difference]: Start difference. First operand 93 states and 138 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:49,275 INFO L93 Difference]: Finished difference Result 278 states and 413 transitions. [2023-12-24 12:57:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 12:57:49,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2023-12-24 12:57:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:49,278 INFO L225 Difference]: With dead ends: 278 [2023-12-24 12:57:49,278 INFO L226 Difference]: Without dead ends: 186 [2023-12-24 12:57:49,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:57:49,280 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 117 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:49,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 330 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:57:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-24 12:57:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 155. [2023-12-24 12:57:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 128 states have (on average 1.4140625) internal successors, (181), 128 states have internal predecessors, (181), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:57:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 229 transitions. [2023-12-24 12:57:49,298 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 229 transitions. Word has length 95 [2023-12-24 12:57:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:49,299 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 229 transitions. [2023-12-24 12:57:49,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 229 transitions. [2023-12-24 12:57:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-24 12:57:49,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:49,300 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:49,321 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 12:57:49,507 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 12:57:49,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:49,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash -285628438, now seen corresponding path program 1 times [2023-12-24 12:57:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400982827] [2023-12-24 12:57:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:49,518 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 12:57:49,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:49,521 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 12:57:49,521 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 12:57:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:49,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 12:57:49,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:57:49,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:49,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:49,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400982827] [2023-12-24 12:57:49,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400982827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:49,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 12:57:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204295525] [2023-12-24 12:57:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:49,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 12:57:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 12:57:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 12:57:49,721 INFO L87 Difference]: Start difference. First operand 155 states and 229 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:49,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:49,745 INFO L93 Difference]: Finished difference Result 256 states and 380 transitions. [2023-12-24 12:57:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 12:57:49,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-24 12:57:49,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:49,747 INFO L225 Difference]: With dead ends: 256 [2023-12-24 12:57:49,747 INFO L226 Difference]: Without dead ends: 157 [2023-12-24 12:57:49,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 12:57:49,748 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 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 12:57:49,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 12:57:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-24 12:57:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-12-24 12:57:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 130 states have (on average 1.4076923076923078) internal successors, (183), 130 states have internal predecessors, (183), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 12:57:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 231 transitions. [2023-12-24 12:57:49,757 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 231 transitions. Word has length 101 [2023-12-24 12:57:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:49,758 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 231 transitions. [2023-12-24 12:57:49,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 231 transitions. [2023-12-24 12:57:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-24 12:57:49,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:49,765 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:49,786 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 12:57:49,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:49,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:49,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1306696792, now seen corresponding path program 1 times [2023-12-24 12:57:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524588633] [2023-12-24 12:57:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:49,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:49,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:49,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:57:49,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 12:57:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:50,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 12:57:50,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:50,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:50,256 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 65 treesize of output 29 [2023-12-24 12:57:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:57:50,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:50,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:50,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524588633] [2023-12-24 12:57:50,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524588633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:50,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:50,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:57:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450239347] [2023-12-24 12:57:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:50,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:57:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:57:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:57:50,274 INFO L87 Difference]: Start difference. First operand 157 states and 231 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:50,684 INFO L93 Difference]: Finished difference Result 334 states and 490 transitions. [2023-12-24 12:57:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:57:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-24 12:57:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:50,687 INFO L225 Difference]: With dead ends: 334 [2023-12-24 12:57:50,687 INFO L226 Difference]: Without dead ends: 241 [2023-12-24 12:57:50,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:57:50,688 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 150 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:50,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 387 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:57:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-24 12:57:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 217. [2023-12-24 12:57:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 183 states have (on average 1.4043715846994536) internal successors, (257), 184 states have internal predecessors, (257), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 12:57:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 317 transitions. [2023-12-24 12:57:50,707 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 317 transitions. Word has length 101 [2023-12-24 12:57:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:50,707 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 317 transitions. [2023-12-24 12:57:50,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 317 transitions. [2023-12-24 12:57:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-24 12:57:50,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:50,709 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:50,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 12:57:50,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:50,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:50,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1699723802, now seen corresponding path program 1 times [2023-12-24 12:57:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729755257] [2023-12-24 12:57:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:50,921 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 12:57:50,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:50,938 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 12:57:50,940 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 (7)] Waiting until timeout for monitored process [2023-12-24 12:57:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:51,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 12:57:51,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:51,198 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 12:57:51,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-12-24 12:57:51,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:51,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-12-24 12:57:51,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:51,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 22 [2023-12-24 12:57:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:57:51,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:51,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:51,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729755257] [2023-12-24 12:57:51,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729755257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 12:57:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076508980] [2023-12-24 12:57:51,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 12:57:51,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 12:57:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:57:51,408 INFO L87 Difference]: Start difference. First operand 217 states and 317 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:52,891 INFO L93 Difference]: Finished difference Result 836 states and 1229 transitions. [2023-12-24 12:57:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 12:57:52,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-24 12:57:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:52,897 INFO L225 Difference]: With dead ends: 836 [2023-12-24 12:57:52,897 INFO L226 Difference]: Without dead ends: 685 [2023-12-24 12:57:52,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:57:52,898 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 444 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:52,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1066 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 12:57:52,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-24 12:57:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 523. [2023-12-24 12:57:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 455 states have (on average 1.4043956043956043) internal successors, (639), 460 states have internal predecessors, (639), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 12:57:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 759 transitions. [2023-12-24 12:57:52,931 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 759 transitions. Word has length 101 [2023-12-24 12:57:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:52,932 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 759 transitions. [2023-12-24 12:57:52,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 759 transitions. [2023-12-24 12:57:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 12:57:52,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:52,935 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:52,943 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 12:57:53,141 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 12:57:53,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:53,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:53,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1030614582, now seen corresponding path program 1 times [2023-12-24 12:57:53,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:53,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077768972] [2023-12-24 12:57:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:53,143 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 12:57:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:53,157 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 12:57:53,189 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 (8)] Waiting until timeout for monitored process [2023-12-24 12:57:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:53,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:57:53,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:53,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:57:53,424 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 14 treesize of output 10 [2023-12-24 12:57:53,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:57:53,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:53,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 12:57:53,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:53,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 67 [2023-12-24 12:57:53,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:53,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 80 [2023-12-24 12:57:54,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:54,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 40 [2023-12-24 12:57:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-24 12:57:54,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:54,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:54,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077768972] [2023-12-24 12:57:54,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077768972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:54,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 12:57:54,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769468253] [2023-12-24 12:57:54,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 12:57:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:54,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 12:57:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:57:54,132 INFO L87 Difference]: Start difference. First operand 523 states and 759 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 12:57:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:55,452 INFO L93 Difference]: Finished difference Result 1306 states and 1889 transitions. [2023-12-24 12:57:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:57:55,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2023-12-24 12:57:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:55,455 INFO L225 Difference]: With dead ends: 1306 [2023-12-24 12:57:55,455 INFO L226 Difference]: Without dead ends: 877 [2023-12-24 12:57:55,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2023-12-24 12:57:55,457 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 664 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:55,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 662 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 12:57:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-24 12:57:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 799. [2023-12-24 12:57:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 710 states have (on average 1.412676056338028) internal successors, (1003), 719 states have internal predecessors, (1003), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 67 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 12:57:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1155 transitions. [2023-12-24 12:57:55,505 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1155 transitions. Word has length 103 [2023-12-24 12:57:55,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:55,505 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1155 transitions. [2023-12-24 12:57:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 12:57:55,505 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1155 transitions. [2023-12-24 12:57:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 12:57:55,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:55,506 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:55,524 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 (8)] Ended with exit code 0 [2023-12-24 12:57:55,714 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 12:57:55,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:55,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1691280276, now seen corresponding path program 1 times [2023-12-24 12:57:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:55,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464296850] [2023-12-24 12:57:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:55,716 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 12:57:55,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:55,717 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 12:57:55,718 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 12:57:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:55,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 12:57:55,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:55,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:55,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 26 [2023-12-24 12:57:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:57:55,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:55,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464296850] [2023-12-24 12:57:55,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464296850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:55,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:55,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:57:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936625936] [2023-12-24 12:57:55,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:55,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:57:55,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:57:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:57:55,987 INFO L87 Difference]: Start difference. First operand 799 states and 1155 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:57,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 12:57:58,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:57:58,273 INFO L93 Difference]: Finished difference Result 1653 states and 2389 transitions. [2023-12-24 12:57:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:57:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-24 12:57:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:57:58,277 INFO L225 Difference]: With dead ends: 1653 [2023-12-24 12:57:58,277 INFO L226 Difference]: Without dead ends: 961 [2023-12-24 12:57:58,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 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 12:57:58,279 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 114 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:57:58,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 458 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 12:57:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2023-12-24 12:57:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 949. [2023-12-24 12:57:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 850 states have (on average 1.4164705882352941) internal successors, (1204), 861 states have internal predecessors, (1204), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 73 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 12:57:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1372 transitions. [2023-12-24 12:57:58,321 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1372 transitions. Word has length 103 [2023-12-24 12:57:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:57:58,323 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1372 transitions. [2023-12-24 12:57:58,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:57:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1372 transitions. [2023-12-24 12:57:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 12:57:58,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:57:58,324 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:58,341 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 12:57:58,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:57:58,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:57:58,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:57:58,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1786038570, now seen corresponding path program 1 times [2023-12-24 12:57:58,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:57:58,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538539247] [2023-12-24 12:57:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:57:58,543 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 12:57:58,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:57:58,544 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:57:58,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 12:57:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:57:58,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:57:58,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:57:58,796 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 14 treesize of output 10 [2023-12-24 12:57:58,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:57:58,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:57:58,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:58,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 12:57:59,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:59,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 55 [2023-12-24 12:57:59,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:59,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 68 [2023-12-24 12:57:59,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:57:59,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 38 [2023-12-24 12:57:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-24 12:57:59,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:57:59,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:57:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538539247] [2023-12-24 12:57:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538539247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:57:59,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:57:59,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 12:57:59,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311469133] [2023-12-24 12:57:59,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:57:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:57:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:57:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:57:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:57:59,374 INFO L87 Difference]: Start difference. First operand 949 states and 1372 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:58:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:00,992 INFO L93 Difference]: Finished difference Result 1947 states and 2817 transitions. [2023-12-24 12:58:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:58:00,993 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2023-12-24 12:58:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:00,996 INFO L225 Difference]: With dead ends: 1947 [2023-12-24 12:58:00,996 INFO L226 Difference]: Without dead ends: 1146 [2023-12-24 12:58:00,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:58:00,998 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 583 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:00,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 856 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 12:58:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-12-24 12:58:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 971. [2023-12-24 12:58:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 872 states have (on average 1.4162844036697249) internal successors, (1235), 883 states have internal predecessors, (1235), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 73 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 12:58:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1403 transitions. [2023-12-24 12:58:01,038 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1403 transitions. Word has length 103 [2023-12-24 12:58:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:01,038 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1403 transitions. [2023-12-24 12:58:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:58:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1403 transitions. [2023-12-24 12:58:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-24 12:58:01,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:01,039 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:01,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:01,246 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:01,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1249469300, now seen corresponding path program 1 times [2023-12-24 12:58:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:01,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707300912] [2023-12-24 12:58:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:01,247 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 12:58:01,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:01,254 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 12:58:01,254 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 12:58:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:01,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 12:58:01,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:01,483 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 12:58:01,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 12:58:01,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:01,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2023-12-24 12:58:01,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:01,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 64 [2023-12-24 12:58:02,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:02,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 76 [2023-12-24 12:58:02,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:02,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 44 [2023-12-24 12:58:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 151 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-24 12:58:02,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:02,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:02,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707300912] [2023-12-24 12:58:02,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707300912] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:02,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:02,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2023-12-24 12:58:02,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163743878] [2023-12-24 12:58:02,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:02,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:02,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:58:02,399 INFO L87 Difference]: Start difference. First operand 971 states and 1403 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:02,756 INFO L93 Difference]: Finished difference Result 1779 states and 2564 transitions. [2023-12-24 12:58:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:58:02,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-24 12:58:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:02,759 INFO L225 Difference]: With dead ends: 1779 [2023-12-24 12:58:02,759 INFO L226 Difference]: Without dead ends: 959 [2023-12-24 12:58:02,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-24 12:58:02,761 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 194 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:02,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 403 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 12:58:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-12-24 12:58:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 897. [2023-12-24 12:58:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 799 states have (on average 1.4080100125156445) internal successors, (1125), 808 states have internal predecessors, (1125), 80 states have call successors, (80), 17 states have call predecessors, (80), 17 states have return successors, (80), 71 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 12:58:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1285 transitions. [2023-12-24 12:58:02,801 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1285 transitions. Word has length 103 [2023-12-24 12:58:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:02,802 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1285 transitions. [2023-12-24 12:58:02,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1285 transitions. [2023-12-24 12:58:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 12:58:02,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:02,803 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:02,809 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 12:58:03,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:03,009 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:03,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:03,010 INFO L85 PathProgramCache]: Analyzing trace with hash -186850940, now seen corresponding path program 1 times [2023-12-24 12:58:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:03,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673673653] [2023-12-24 12:58:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:03,010 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 12:58:03,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:03,016 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:03,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 12:58:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:03,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 12:58:03,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:03,230 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 12:58:03,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-12-24 12:58:03,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:03,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-12-24 12:58:03,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:03,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 21 [2023-12-24 12:58:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:03,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:03,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:03,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673673653] [2023-12-24 12:58:03,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673673653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 12:58:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867444782] [2023-12-24 12:58:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:03,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 12:58:03,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 12:58:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:58:03,405 INFO L87 Difference]: Start difference. First operand 897 states and 1285 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:04,706 INFO L93 Difference]: Finished difference Result 2186 states and 3154 transitions. [2023-12-24 12:58:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 12:58:04,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-12-24 12:58:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:04,710 INFO L225 Difference]: With dead ends: 2186 [2023-12-24 12:58:04,710 INFO L226 Difference]: Without dead ends: 1444 [2023-12-24 12:58:04,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:58:04,712 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 373 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:04,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1466 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 12:58:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2023-12-24 12:58:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 938. [2023-12-24 12:58:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 840 states have (on average 1.4095238095238096) internal successors, (1184), 849 states have internal predecessors, (1184), 80 states have call successors, (80), 17 states have call predecessors, (80), 17 states have return successors, (80), 71 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 12:58:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1344 transitions. [2023-12-24 12:58:04,751 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1344 transitions. Word has length 104 [2023-12-24 12:58:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:04,751 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 1344 transitions. [2023-12-24 12:58:04,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1344 transitions. [2023-12-24 12:58:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 12:58:04,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:04,752 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:04,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:04,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:04,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:04,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash -24033937, now seen corresponding path program 1 times [2023-12-24 12:58:04,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:04,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167717484] [2023-12-24 12:58:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:04,959 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 12:58:04,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:04,960 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 12:58:04,961 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 12:58:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:05,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 12:58:05,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:05,199 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 12:58:05,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 12:58:05,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:05,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 12:58:05,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:05,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2023-12-24 12:58:05,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:05,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2023-12-24 12:58:06,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:06,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 55 [2023-12-24 12:58:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 151 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-24 12:58:06,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:06,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:06,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167717484] [2023-12-24 12:58:06,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167717484] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:06,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:06,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 23 [2023-12-24 12:58:06,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634110031] [2023-12-24 12:58:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:06,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 12:58:06,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 12:58:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-12-24 12:58:06,530 INFO L87 Difference]: Start difference. First operand 938 states and 1344 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:07,256 INFO L93 Difference]: Finished difference Result 2028 states and 2910 transitions. [2023-12-24 12:58:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:58:07,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-12-24 12:58:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:07,270 INFO L225 Difference]: With dead ends: 2028 [2023-12-24 12:58:07,271 INFO L226 Difference]: Without dead ends: 1261 [2023-12-24 12:58:07,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2023-12-24 12:58:07,273 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 354 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:07,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 719 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 12:58:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-12-24 12:58:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1208. [2023-12-24 12:58:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1084 states have (on average 1.401291512915129) internal successors, (1519), 1097 states have internal predecessors, (1519), 102 states have call successors, (102), 21 states have call predecessors, (102), 21 states have return successors, (102), 89 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 12:58:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1723 transitions. [2023-12-24 12:58:07,336 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1723 transitions. Word has length 104 [2023-12-24 12:58:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:07,337 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1723 transitions. [2023-12-24 12:58:07,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1723 transitions. [2023-12-24 12:58:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 12:58:07,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:07,338 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:07,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-24 12:58:07,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:07,545 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:07,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash 547894548, now seen corresponding path program 1 times [2023-12-24 12:58:07,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:07,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467347742] [2023-12-24 12:58:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:07,546 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 12:58:07,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:07,547 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:07,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 12:58:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:07,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 12:58:07,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:07,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:07,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 32 [2023-12-24 12:58:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:07,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:07,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:07,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467347742] [2023-12-24 12:58:07,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467347742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:07,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:07,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 12:58:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880079744] [2023-12-24 12:58:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:58:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:58:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:58:07,878 INFO L87 Difference]: Start difference. First operand 1208 states and 1723 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:08,768 INFO L93 Difference]: Finished difference Result 3877 states and 5543 transitions. [2023-12-24 12:58:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:58:08,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-12-24 12:58:08,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:08,776 INFO L225 Difference]: With dead ends: 3877 [2023-12-24 12:58:08,776 INFO L226 Difference]: Without dead ends: 2847 [2023-12-24 12:58:08,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:58:08,779 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 310 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:08,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 625 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 12:58:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-12-24 12:58:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1383. [2023-12-24 12:58:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1249 states have (on average 1.400320256204964) internal successors, (1749), 1264 states have internal predecessors, (1749), 110 states have call successors, (110), 23 states have call predecessors, (110), 23 states have return successors, (110), 95 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-24 12:58:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1969 transitions. [2023-12-24 12:58:08,886 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1969 transitions. Word has length 104 [2023-12-24 12:58:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:08,886 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 1969 transitions. [2023-12-24 12:58:08,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1969 transitions. [2023-12-24 12:58:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-24 12:58:08,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:08,888 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:08,895 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 (14)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:09,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:09,095 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:09,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash 940921558, now seen corresponding path program 1 times [2023-12-24 12:58:09,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:09,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349131347] [2023-12-24 12:58:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:09,097 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 12:58:09,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:09,098 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 12:58:09,099 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 (15)] Waiting until timeout for monitored process [2023-12-24 12:58:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:09,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:58:09,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:09,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:58:09,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 12:58:09,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:09,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 12:58:09,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:09,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 57 [2023-12-24 12:58:09,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:09,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 69 [2023-12-24 12:58:09,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:09,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 37 [2023-12-24 12:58:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 151 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-24 12:58:09,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 42 proven. 21 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-24 12:58:10,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349131347] [2023-12-24 12:58:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349131347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 12:58:10,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:58:10,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2023-12-24 12:58:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334229238] [2023-12-24 12:58:10,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:58:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 12:58:10,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 12:58:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2023-12-24 12:58:10,379 INFO L87 Difference]: Start difference. First operand 1383 states and 1969 transitions. Second operand has 24 states, 20 states have (on average 4.05) internal successors, (81), 22 states have internal predecessors, (81), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-24 12:58:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:12,586 INFO L93 Difference]: Finished difference Result 2794 states and 3927 transitions. [2023-12-24 12:58:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 12:58:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 22 states have internal predecessors, (81), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) Word has length 104 [2023-12-24 12:58:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:12,590 INFO L225 Difference]: With dead ends: 2794 [2023-12-24 12:58:12,590 INFO L226 Difference]: Without dead ends: 1601 [2023-12-24 12:58:12,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=517, Invalid=1463, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 12:58:12,592 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1738 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:12,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 765 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 12:58:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-12-24 12:58:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 666. [2023-12-24 12:58:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 611 states have (on average 1.3960720130932898) internal successors, (853), 614 states have internal predecessors, (853), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 12:58:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 933 transitions. [2023-12-24 12:58:12,632 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 933 transitions. Word has length 104 [2023-12-24 12:58:12,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:12,632 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 933 transitions. [2023-12-24 12:58:12,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.05) internal successors, (81), 22 states have internal predecessors, (81), 8 states have call successors, (17), 4 states have call predecessors, (17), 7 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-24 12:58:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 933 transitions. [2023-12-24 12:58:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 12:58:12,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:12,633 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:12,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:12,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:12,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:12,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1287465970, now seen corresponding path program 1 times [2023-12-24 12:58:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:12,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795178754] [2023-12-24 12:58:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:12,857 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 12:58:12,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:12,857 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 12:58:12,858 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 12:58:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:13,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 12:58:13,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:13,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:58:13,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:58:13,101 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 14 treesize of output 10 [2023-12-24 12:58:13,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:58:13,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:13,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-12-24 12:58:13,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:13,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 48 [2023-12-24 12:58:13,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:13,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 27 [2023-12-24 12:58:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 12:58:13,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:13,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:13,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795178754] [2023-12-24 12:58:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795178754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:13,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 12:58:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66081172] [2023-12-24 12:58:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:13,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 12:58:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 12:58:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:58:13,420 INFO L87 Difference]: Start difference. First operand 666 states and 933 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:58:15,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:15,297 INFO L93 Difference]: Finished difference Result 1808 states and 2570 transitions. [2023-12-24 12:58:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 12:58:15,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2023-12-24 12:58:15,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:15,300 INFO L225 Difference]: With dead ends: 1808 [2023-12-24 12:58:15,301 INFO L226 Difference]: Without dead ends: 1329 [2023-12-24 12:58:15,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2023-12-24 12:58:15,303 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 561 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:15,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1255 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 12:58:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2023-12-24 12:58:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 723. [2023-12-24 12:58:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 668 states have (on average 1.3982035928143712) internal successors, (934), 671 states have internal predecessors, (934), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 12:58:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1014 transitions. [2023-12-24 12:58:15,338 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1014 transitions. Word has length 105 [2023-12-24 12:58:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:15,338 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1014 transitions. [2023-12-24 12:58:15,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:58:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1014 transitions. [2023-12-24 12:58:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-24 12:58:15,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:15,339 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:15,348 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 12:58:15,546 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 12:58:15,546 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash -894438960, now seen corresponding path program 1 times [2023-12-24 12:58:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841190789] [2023-12-24 12:58:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:15,547 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 12:58:15,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:15,548 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 12:58:15,552 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 12:58:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:15,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 12:58:15,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:15,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:15,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 26 [2023-12-24 12:58:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:15,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:15,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841190789] [2023-12-24 12:58:15,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841190789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:15,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:15,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:58:15,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155057438] [2023-12-24 12:58:15,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:15,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:15,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:58:15,860 INFO L87 Difference]: Start difference. First operand 723 states and 1014 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:16,716 INFO L93 Difference]: Finished difference Result 1820 states and 2593 transitions. [2023-12-24 12:58:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:58:16,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2023-12-24 12:58:16,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:16,719 INFO L225 Difference]: With dead ends: 1820 [2023-12-24 12:58:16,719 INFO L226 Difference]: Without dead ends: 1309 [2023-12-24 12:58:16,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 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 12:58:16,720 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 233 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:16,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 510 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 12:58:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-12-24 12:58:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 782. [2023-12-24 12:58:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 722 states have (on average 1.4030470914127424) internal successors, (1013), 726 states have internal predecessors, (1013), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 12:58:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1101 transitions. [2023-12-24 12:58:16,800 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1101 transitions. Word has length 105 [2023-12-24 12:58:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:16,800 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1101 transitions. [2023-12-24 12:58:16,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1101 transitions. [2023-12-24 12:58:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:16,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:16,801 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:16,823 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 12:58:17,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:17,007 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:17,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1141259752, now seen corresponding path program 1 times [2023-12-24 12:58:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:17,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846046353] [2023-12-24 12:58:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:17,008 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 12:58:17,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:17,009 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:17,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 12:58:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:17,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:58:17,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:17,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 12:58:17,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:58:17,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:17,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 12:58:17,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:17,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 12:58:17,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:17,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 71 [2023-12-24 12:58:17,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:17,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 83 [2023-12-24 12:58:18,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:18,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 35 [2023-12-24 12:58:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-24 12:58:18,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:18,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846046353] [2023-12-24 12:58:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846046353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:18,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:18,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 12:58:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011163600] [2023-12-24 12:58:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:18,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 12:58:18,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 12:58:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:58:18,202 INFO L87 Difference]: Start difference. First operand 782 states and 1101 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-24 12:58:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:19,923 INFO L93 Difference]: Finished difference Result 1532 states and 2176 transitions. [2023-12-24 12:58:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:58:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 106 [2023-12-24 12:58:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:19,926 INFO L225 Difference]: With dead ends: 1532 [2023-12-24 12:58:19,926 INFO L226 Difference]: Without dead ends: 960 [2023-12-24 12:58:19,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-12-24 12:58:19,927 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 649 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:19,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 718 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 12:58:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-12-24 12:58:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 782. [2023-12-24 12:58:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 722 states have (on average 1.4016620498614958) internal successors, (1012), 726 states have internal predecessors, (1012), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 12:58:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1100 transitions. [2023-12-24 12:58:19,968 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1100 transitions. Word has length 106 [2023-12-24 12:58:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:19,968 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1100 transitions. [2023-12-24 12:58:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-24 12:58:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1100 transitions. [2023-12-24 12:58:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:19,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:19,969 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:19,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:20,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:20,176 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:20,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1187716924, now seen corresponding path program 1 times [2023-12-24 12:58:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:20,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719365362] [2023-12-24 12:58:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:20,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:20,177 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 12:58:20,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 12:58:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:20,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:58:20,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:20,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:20,471 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 77 treesize of output 41 [2023-12-24 12:58:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:20,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:20,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719365362] [2023-12-24 12:58:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719365362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:20,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:20,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 12:58:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040259330] [2023-12-24 12:58:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:20,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 12:58:20,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 12:58:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:58:20,498 INFO L87 Difference]: Start difference. First operand 782 states and 1100 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:21,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:21,006 INFO L93 Difference]: Finished difference Result 1816 states and 2594 transitions. [2023-12-24 12:58:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:58:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 12:58:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:21,010 INFO L225 Difference]: With dead ends: 1816 [2023-12-24 12:58:21,010 INFO L226 Difference]: Without dead ends: 1212 [2023-12-24 12:58:21,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:58:21,011 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 102 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:21,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 729 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:58:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2023-12-24 12:58:21,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 825. [2023-12-24 12:58:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 765 states have (on average 1.4065359477124184) internal successors, (1076), 769 states have internal predecessors, (1076), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 12:58:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1164 transitions. [2023-12-24 12:58:21,053 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1164 transitions. Word has length 106 [2023-12-24 12:58:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:21,053 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1164 transitions. [2023-12-24 12:58:21,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1164 transitions. [2023-12-24 12:58:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:21,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:21,054 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:21,062 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 12:58:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:21,260 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -92146754, now seen corresponding path program 1 times [2023-12-24 12:58:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135849677] [2023-12-24 12:58:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:21,261 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 12:58:21,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:21,262 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:21,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 12:58:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:21,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 12:58:21,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:21,533 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 12:58:21,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 12:58:21,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:21,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2023-12-24 12:58:21,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:21,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 19 [2023-12-24 12:58:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 131 proven. 9 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 12:58:21,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:21,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:21,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135849677] [2023-12-24 12:58:21,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135849677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:21,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391914518] [2023-12-24 12:58:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:21,867 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 12:58:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 12:58:21,901 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 12:58:21,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-24 12:58:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:22,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 12:58:22,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:22,560 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 12:58:22,685 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 12:58:22,730 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 23 treesize of output 22 [2023-12-24 12:58:22,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:22,775 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 27 treesize of output 15 [2023-12-24 12:58:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 123 proven. 9 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 12:58:22,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:22,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1391914518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:22,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:58:22,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-24 12:58:22,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938876876] [2023-12-24 12:58:22,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:58:22,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 12:58:22,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 12:58:22,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 12:58:22,826 INFO L87 Difference]: Start difference. First operand 825 states and 1164 transitions. Second operand has 16 states, 14 states have (on average 6.714285714285714) internal successors, (94), 16 states have internal predecessors, (94), 7 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-24 12:58:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:24,224 INFO L93 Difference]: Finished difference Result 1627 states and 2293 transitions. [2023-12-24 12:58:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 12:58:24,225 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.714285714285714) internal successors, (94), 16 states have internal predecessors, (94), 7 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24) Word has length 106 [2023-12-24 12:58:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:24,228 INFO L225 Difference]: With dead ends: 1627 [2023-12-24 12:58:24,228 INFO L226 Difference]: Without dead ends: 990 [2023-12-24 12:58:24,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=256, Invalid=934, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 12:58:24,229 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 466 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:24,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 640 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 12:58:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-12-24 12:58:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 813. [2023-12-24 12:58:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 753 states have (on average 1.3851261620185924) internal successors, (1043), 757 states have internal predecessors, (1043), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 12:58:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1131 transitions. [2023-12-24 12:58:24,299 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1131 transitions. Word has length 106 [2023-12-24 12:58:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:24,300 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1131 transitions. [2023-12-24 12:58:24,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.714285714285714) internal successors, (94), 16 states have internal predecessors, (94), 7 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-24 12:58:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1131 transitions. [2023-12-24 12:58:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:24,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:24,301 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:24,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:24,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:24,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 12:58:24,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:24,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:24,708 INFO L85 PathProgramCache]: Analyzing trace with hash -501226818, now seen corresponding path program 1 times [2023-12-24 12:58:24,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:24,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830366143] [2023-12-24 12:58:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:24,709 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 12:58:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:24,710 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:24,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 12:58:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:24,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:58:24,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:24,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-24 12:58:24,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:24,972 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 42 treesize of output 18 [2023-12-24 12:58:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:24,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:24,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830366143] [2023-12-24 12:58:24,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830366143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:24,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:24,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 12:58:24,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224243185] [2023-12-24 12:58:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:24,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:58:24,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:24,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:58:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:58:24,991 INFO L87 Difference]: Start difference. First operand 813 states and 1131 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:28,205 INFO L93 Difference]: Finished difference Result 1497 states and 2089 transitions. [2023-12-24 12:58:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 12:58:28,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 12:58:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:28,215 INFO L225 Difference]: With dead ends: 1497 [2023-12-24 12:58:28,215 INFO L226 Difference]: Without dead ends: 881 [2023-12-24 12:58:28,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:58:28,216 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 122 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:28,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 592 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 12:58:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-24 12:58:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 786. [2023-12-24 12:58:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 726 states have (on average 1.3774104683195592) internal successors, (1000), 730 states have internal predecessors, (1000), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 12:58:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1088 transitions. [2023-12-24 12:58:28,268 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1088 transitions. Word has length 106 [2023-12-24 12:58:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:28,268 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1088 transitions. [2023-12-24 12:58:28,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1088 transitions. [2023-12-24 12:58:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:28,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:28,269 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:28,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:28,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:28,475 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:28,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1967397668, now seen corresponding path program 1 times [2023-12-24 12:58:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104143071] [2023-12-24 12:58:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:28,476 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 12:58:28,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:28,477 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:28,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 12:58:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:28,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 12:58:28,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:28,792 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 12:58:28,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 12:58:29,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 65 [2023-12-24 12:58:29,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:29,285 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 194 treesize of output 80 [2023-12-24 12:58:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 12:58:29,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:29,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104143071] [2023-12-24 12:58:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104143071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [486052819] [2023-12-24 12:58:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:29,509 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 12:58:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 12:58:29,509 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 12:58:29,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-24 12:58:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:30,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:58:30,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:30,180 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 12:58:30,385 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 64 treesize of output 32 [2023-12-24 12:58:30,757 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 103 treesize of output 59 [2023-12-24 12:58:30,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:30,910 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 176 treesize of output 80 [2023-12-24 12:58:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 12:58:30,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:31,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [486052819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:31,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:58:31,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-24 12:58:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153528531] [2023-12-24 12:58:31,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:58:31,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 12:58:31,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 12:58:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-24 12:58:31,023 INFO L87 Difference]: Start difference. First operand 786 states and 1088 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 12:58:35,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 12:58:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:36,118 INFO L93 Difference]: Finished difference Result 1706 states and 2351 transitions. [2023-12-24 12:58:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 12:58:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 106 [2023-12-24 12:58:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:36,123 INFO L225 Difference]: With dead ends: 1706 [2023-12-24 12:58:36,123 INFO L226 Difference]: Without dead ends: 1704 [2023-12-24 12:58:36,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2023-12-24 12:58:36,123 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 510 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:36,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1252 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 581 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-12-24 12:58:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2023-12-24 12:58:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1665. [2023-12-24 12:58:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1539 states have (on average 1.373619233268356) internal successors, (2114), 1555 states have internal predecessors, (2114), 92 states have call successors, (92), 33 states have call predecessors, (92), 33 states have return successors, (92), 76 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 12:58:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2298 transitions. [2023-12-24 12:58:36,233 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2298 transitions. Word has length 106 [2023-12-24 12:58:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:36,233 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2298 transitions. [2023-12-24 12:58:36,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 12:58:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2298 transitions. [2023-12-24 12:58:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:36,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:36,234 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:36,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:36,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:36,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:36,647 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:36,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1972879471, now seen corresponding path program 1 times [2023-12-24 12:58:36,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:36,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666134431] [2023-12-24 12:58:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:36,648 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 12:58:36,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:36,649 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:36,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 12:58:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:36,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:58:36,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:36,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:36,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 25 [2023-12-24 12:58:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:36,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:36,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:36,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666134431] [2023-12-24 12:58:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666134431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:36,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:58:36,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859787913] [2023-12-24 12:58:36,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:36,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:58:36,975 INFO L87 Difference]: Start difference. First operand 1665 states and 2298 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:37,568 INFO L93 Difference]: Finished difference Result 3847 states and 5389 transitions. [2023-12-24 12:58:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:58:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 12:58:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:37,581 INFO L225 Difference]: With dead ends: 3847 [2023-12-24 12:58:37,581 INFO L226 Difference]: Without dead ends: 2593 [2023-12-24 12:58:37,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:58:37,584 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 161 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:37,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 446 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 12:58:37,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2023-12-24 12:58:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 1571. [2023-12-24 12:58:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1445 states have (on average 1.3633217993079585) internal successors, (1970), 1461 states have internal predecessors, (1970), 92 states have call successors, (92), 33 states have call predecessors, (92), 33 states have return successors, (92), 76 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-24 12:58:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2154 transitions. [2023-12-24 12:58:37,705 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2154 transitions. Word has length 106 [2023-12-24 12:58:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:37,705 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2154 transitions. [2023-12-24 12:58:37,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2154 transitions. [2023-12-24 12:58:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:37,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:37,706 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:37,724 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 (25)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:37,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:37,912 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:37,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1929060815, now seen corresponding path program 1 times [2023-12-24 12:58:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311128624] [2023-12-24 12:58:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:37,913 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 12:58:37,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:37,914 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:37,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 12:58:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:38,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 12:58:38,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:38,255 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 12:58:38,256 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 14 treesize of output 10 [2023-12-24 12:58:38,334 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 41 treesize of output 19 [2023-12-24 12:58:38,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:38,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 12:58:38,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:38,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 79 [2023-12-24 12:58:38,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:38,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 87 [2023-12-24 12:58:39,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:39,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 114 treesize of output 50 [2023-12-24 12:58:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 181 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-24 12:58:39,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:58:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:39,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:39,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311128624] [2023-12-24 12:58:39,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311128624] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:58:39,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:58:39,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2023-12-24 12:58:39,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668169797] [2023-12-24 12:58:39,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:39,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:39,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-12-24 12:58:39,647 INFO L87 Difference]: Start difference. First operand 1571 states and 2154 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:40,465 INFO L93 Difference]: Finished difference Result 3169 states and 4390 transitions. [2023-12-24 12:58:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:58:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 12:58:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:40,470 INFO L225 Difference]: With dead ends: 3169 [2023-12-24 12:58:40,470 INFO L226 Difference]: Without dead ends: 1971 [2023-12-24 12:58:40,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-12-24 12:58:40,472 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 311 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:40,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 408 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 12:58:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2023-12-24 12:58:40,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1652. [2023-12-24 12:58:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1515 states have (on average 1.3564356435643565) internal successors, (2055), 1534 states have internal predecessors, (2055), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:58:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2255 transitions. [2023-12-24 12:58:40,594 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2255 transitions. Word has length 106 [2023-12-24 12:58:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:40,594 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2255 transitions. [2023-12-24 12:58:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:58:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2255 transitions. [2023-12-24 12:58:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:40,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:40,596 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:40,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:40,802 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:40,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash 440690624, now seen corresponding path program 1 times [2023-12-24 12:58:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:40,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379207540] [2023-12-24 12:58:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:40,803 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 12:58:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:40,803 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:40,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 12:58:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:41,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:58:41,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:41,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:58:41,050 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 14 treesize of output 10 [2023-12-24 12:58:41,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:58:41,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:41,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 12:58:41,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:41,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 68 [2023-12-24 12:58:41,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:41,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 80 [2023-12-24 12:58:41,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:41,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 40 [2023-12-24 12:58:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-24 12:58:41,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:41,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379207540] [2023-12-24 12:58:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379207540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:41,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 12:58:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219158674] [2023-12-24 12:58:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:41,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 12:58:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 12:58:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:58:41,730 INFO L87 Difference]: Start difference. First operand 1652 states and 2255 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 12:58:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:43,633 INFO L93 Difference]: Finished difference Result 3372 states and 4653 transitions. [2023-12-24 12:58:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:58:43,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 106 [2023-12-24 12:58:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:43,649 INFO L225 Difference]: With dead ends: 3372 [2023-12-24 12:58:43,649 INFO L226 Difference]: Without dead ends: 2087 [2023-12-24 12:58:43,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2023-12-24 12:58:43,656 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 612 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:43,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 865 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 12:58:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2023-12-24 12:58:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1696. [2023-12-24 12:58:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1559 states have (on average 1.3566388710711994) internal successors, (2115), 1578 states have internal predecessors, (2115), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:58:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2315 transitions. [2023-12-24 12:58:43,829 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2315 transitions. Word has length 106 [2023-12-24 12:58:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:43,830 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2315 transitions. [2023-12-24 12:58:43,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 12:58:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2315 transitions. [2023-12-24 12:58:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:43,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:43,833 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:43,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:44,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:44,039 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:44,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2069609425, now seen corresponding path program 1 times [2023-12-24 12:58:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:44,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894545911] [2023-12-24 12:58:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:44,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:44,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:44,041 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:44,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 12:58:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:44,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:58:44,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:44,352 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 14 treesize of output 10 [2023-12-24 12:58:44,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:58:44,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:58:44,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:44,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2023-12-24 12:58:44,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:44,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 72 [2023-12-24 12:58:45,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:45,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 127 treesize of output 57 [2023-12-24 12:58:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 12:58:45,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:45,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894545911] [2023-12-24 12:58:45,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894545911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:45,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:45,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 12:58:45,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068425120] [2023-12-24 12:58:45,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:45,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:58:45,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:58:45,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:58:45,088 INFO L87 Difference]: Start difference. First operand 1696 states and 2315 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:58:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:47,325 INFO L93 Difference]: Finished difference Result 3588 states and 4950 transitions. [2023-12-24 12:58:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:58:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2023-12-24 12:58:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:47,330 INFO L225 Difference]: With dead ends: 3588 [2023-12-24 12:58:47,330 INFO L226 Difference]: Without dead ends: 2277 [2023-12-24 12:58:47,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:58:47,332 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 558 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:47,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 707 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 12:58:47,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2023-12-24 12:58:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1696. [2023-12-24 12:58:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1559 states have (on average 1.3553559974342528) internal successors, (2113), 1578 states have internal predecessors, (2113), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:58:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2313 transitions. [2023-12-24 12:58:47,471 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2313 transitions. Word has length 106 [2023-12-24 12:58:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:47,471 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2313 transitions. [2023-12-24 12:58:47,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:58:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2313 transitions. [2023-12-24 12:58:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:47,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:47,472 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:47,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:47,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:47,678 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:47,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2090496299, now seen corresponding path program 1 times [2023-12-24 12:58:47,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:47,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345822375] [2023-12-24 12:58:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:47,679 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 12:58:47,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:47,680 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:47,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 12:58:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:47,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 12:58:47,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:47,954 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 12:58:47,956 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 14 treesize of output 10 [2023-12-24 12:58:47,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:58:48,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:48,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 12:58:48,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:48,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2023-12-24 12:58:48,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:48,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 71 [2023-12-24 12:58:48,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:48,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 43 [2023-12-24 12:58:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 12:58:48,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:48,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345822375] [2023-12-24 12:58:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345822375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:48,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 12:58:48,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6558162] [2023-12-24 12:58:48,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:48,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 12:58:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 12:58:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:58:48,529 INFO L87 Difference]: Start difference. First operand 1696 states and 2313 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:58:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:50,541 INFO L93 Difference]: Finished difference Result 3718 states and 5146 transitions. [2023-12-24 12:58:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:58:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2023-12-24 12:58:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:50,545 INFO L225 Difference]: With dead ends: 3718 [2023-12-24 12:58:50,545 INFO L226 Difference]: Without dead ends: 2400 [2023-12-24 12:58:50,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:58:50,547 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 621 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:50,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 692 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 12:58:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2023-12-24 12:58:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 1621. [2023-12-24 12:58:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1484 states have (on average 1.3524258760107817) internal successors, (2007), 1503 states have internal predecessors, (2007), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:58:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2207 transitions. [2023-12-24 12:58:50,715 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2207 transitions. Word has length 106 [2023-12-24 12:58:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:50,715 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 2207 transitions. [2023-12-24 12:58:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:58:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2207 transitions. [2023-12-24 12:58:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:50,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:50,716 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:50,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:50,922 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:50,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1221530499, now seen corresponding path program 1 times [2023-12-24 12:58:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:50,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552043582] [2023-12-24 12:58:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:50,924 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 12:58:50,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:50,925 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:50,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 12:58:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:51,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 12:58:51,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:51,200 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 14 treesize of output 10 [2023-12-24 12:58:51,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:58:51,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:58:51,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:51,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 56 [2023-12-24 12:58:51,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:51,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 69 [2023-12-24 12:58:51,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:51,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 43 [2023-12-24 12:58:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 12:58:51,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:51,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552043582] [2023-12-24 12:58:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552043582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:51,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 12:58:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500308866] [2023-12-24 12:58:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:51,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 12:58:51,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 12:58:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:58:51,768 INFO L87 Difference]: Start difference. First operand 1621 states and 2207 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:58:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:54,451 INFO L93 Difference]: Finished difference Result 3307 states and 4540 transitions. [2023-12-24 12:58:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:58:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-12-24 12:58:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:54,456 INFO L225 Difference]: With dead ends: 3307 [2023-12-24 12:58:54,456 INFO L226 Difference]: Without dead ends: 2047 [2023-12-24 12:58:54,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:58:54,458 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 399 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:54,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 893 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 12:58:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2023-12-24 12:58:54,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1693. [2023-12-24 12:58:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1556 states have (on average 1.3541131105398458) internal successors, (2107), 1575 states have internal predecessors, (2107), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:58:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2307 transitions. [2023-12-24 12:58:54,710 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2307 transitions. Word has length 106 [2023-12-24 12:58:54,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:54,711 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2307 transitions. [2023-12-24 12:58:54,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:58:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2307 transitions. [2023-12-24 12:58:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:54,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:54,713 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:54,731 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 (30)] Ended with exit code 0 [2023-12-24 12:58:54,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:54,920 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:54,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 828503489, now seen corresponding path program 1 times [2023-12-24 12:58:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:54,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255361968] [2023-12-24 12:58:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:54,921 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 12:58:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:54,922 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:54,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 12:58:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:55,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:58:55,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:55,217 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 12:58:55,220 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 14 treesize of output 10 [2023-12-24 12:58:55,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:58:55,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:55,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 12:58:55,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:55,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 84 [2023-12-24 12:58:55,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:55,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 115 treesize of output 96 [2023-12-24 12:58:56,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:56,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 126 treesize of output 62 [2023-12-24 12:58:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-24 12:58:56,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:56,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:56,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255361968] [2023-12-24 12:58:56,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255361968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:56,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:56,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 12:58:56,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959769260] [2023-12-24 12:58:56,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:56,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:58:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:56,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:58:56,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:58:56,408 INFO L87 Difference]: Start difference. First operand 1693 states and 2307 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 12:58:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:58:59,316 INFO L93 Difference]: Finished difference Result 3714 states and 5121 transitions. [2023-12-24 12:58:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 12:58:59,317 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 106 [2023-12-24 12:58:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:58:59,322 INFO L225 Difference]: With dead ends: 3714 [2023-12-24 12:58:59,322 INFO L226 Difference]: Without dead ends: 2404 [2023-12-24 12:58:59,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-12-24 12:58:59,324 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 558 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:58:59,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 843 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 12:58:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2023-12-24 12:58:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1814. [2023-12-24 12:58:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1677 states have (on average 1.3530113297555157) internal successors, (2269), 1696 states have internal predecessors, (2269), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:58:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2469 transitions. [2023-12-24 12:58:59,498 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2469 transitions. Word has length 106 [2023-12-24 12:58:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:58:59,498 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 2469 transitions. [2023-12-24 12:58:59,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-24 12:58:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2469 transitions. [2023-12-24 12:58:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-24 12:58:59,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:58:59,499 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:59,507 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 (31)] Forceful destruction successful, exit code 0 [2023-12-24 12:58:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:58:59,706 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:58:59,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:58:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash -976934845, now seen corresponding path program 1 times [2023-12-24 12:58:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:58:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098094114] [2023-12-24 12:58:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:58:59,707 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 12:58:59,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:58:59,708 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:58:59,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 12:58:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:58:59,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 12:58:59,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:58:59,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:58:59,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 25 [2023-12-24 12:58:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:58:59,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:58:59,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:58:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098094114] [2023-12-24 12:58:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098094114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:58:59,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:58:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:58:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427742307] [2023-12-24 12:58:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:58:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:58:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:58:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:58:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:58:59,978 INFO L87 Difference]: Start difference. First operand 1814 states and 2469 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:00,892 INFO L93 Difference]: Finished difference Result 3401 states and 4665 transitions. [2023-12-24 12:59:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:59:00,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 106 [2023-12-24 12:59:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:00,896 INFO L225 Difference]: With dead ends: 3401 [2023-12-24 12:59:00,896 INFO L226 Difference]: Without dead ends: 1970 [2023-12-24 12:59:00,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:59:00,898 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 107 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:00,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 503 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 12:59:00,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2023-12-24 12:59:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1688. [2023-12-24 12:59:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1551 states have (on average 1.3494519664732432) internal successors, (2093), 1570 states have internal predecessors, (2093), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:59:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2293 transitions. [2023-12-24 12:59:01,122 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2293 transitions. Word has length 106 [2023-12-24 12:59:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:01,123 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2293 transitions. [2023-12-24 12:59:01,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2293 transitions. [2023-12-24 12:59:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 12:59:01,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:01,141 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:01,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:01,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:59:01,346 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:01,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1415406319, now seen corresponding path program 1 times [2023-12-24 12:59:01,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766765680] [2023-12-24 12:59:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:01,347 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 12:59:01,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:01,348 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:59:01,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 12:59:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:01,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 12:59:01,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 12:59:01,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:59:01,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:01,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766765680] [2023-12-24 12:59:01,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766765680] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:01,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:59:01,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-24 12:59:01,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075321825] [2023-12-24 12:59:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:01,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:59:01,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:59:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:59:01,840 INFO L87 Difference]: Start difference. First operand 1688 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:02,097 INFO L93 Difference]: Finished difference Result 4081 states and 5648 transitions. [2023-12-24 12:59:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 12:59:02,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2023-12-24 12:59:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:02,101 INFO L225 Difference]: With dead ends: 4081 [2023-12-24 12:59:02,102 INFO L226 Difference]: Without dead ends: 2776 [2023-12-24 12:59:02,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:59:02,103 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 75 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:02,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 617 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 12:59:02,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2023-12-24 12:59:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2207. [2023-12-24 12:59:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2070 states have (on average 1.3521739130434782) internal successors, (2799), 2089 states have internal predecessors, (2799), 100 states have call successors, (100), 36 states have call predecessors, (100), 36 states have return successors, (100), 81 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 12:59:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2999 transitions. [2023-12-24 12:59:02,401 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2999 transitions. Word has length 107 [2023-12-24 12:59:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 2207 states and 2999 transitions. [2023-12-24 12:59:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2999 transitions. [2023-12-24 12:59:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 12:59:02,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:02,409 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:02,414 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 (33)] Ended with exit code 0 [2023-12-24 12:59:02,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:59:02,615 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:02,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1196551601, now seen corresponding path program 1 times [2023-12-24 12:59:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010893284] [2023-12-24 12:59:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:02,615 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 12:59:02,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:02,618 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:59:02,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 12:59:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:02,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 12:59:02,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:02,862 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 14 treesize of output 10 [2023-12-24 12:59:02,962 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 41 treesize of output 19 [2023-12-24 12:59:03,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:03,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 47 [2023-12-24 12:59:05,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:05,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2023-12-24 12:59:12,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:12,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 79 [2023-12-24 12:59:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 181 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-24 12:59:16,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:59:16,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:16,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010893284] [2023-12-24 12:59:16,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010893284] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:16,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:59:16,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19] total 23 [2023-12-24 12:59:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749316210] [2023-12-24 12:59:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:16,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:59:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:59:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-12-24 12:59:16,266 INFO L87 Difference]: Start difference. First operand 2207 states and 2999 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:17,226 INFO L93 Difference]: Finished difference Result 5190 states and 7106 transitions. [2023-12-24 12:59:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 12:59:17,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2023-12-24 12:59:17,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:17,232 INFO L225 Difference]: With dead ends: 5190 [2023-12-24 12:59:17,232 INFO L226 Difference]: Without dead ends: 3520 [2023-12-24 12:59:17,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2023-12-24 12:59:17,233 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 338 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:17,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 652 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 12:59:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2023-12-24 12:59:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 2336. [2023-12-24 12:59:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2188 states have (on average 1.3473491773308959) internal successors, (2948), 2210 states have internal predecessors, (2948), 108 states have call successors, (108), 39 states have call predecessors, (108), 39 states have return successors, (108), 86 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 12:59:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3164 transitions. [2023-12-24 12:59:17,459 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3164 transitions. Word has length 107 [2023-12-24 12:59:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:17,460 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3164 transitions. [2023-12-24 12:59:17,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3164 transitions. [2023-12-24 12:59:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 12:59:17,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:17,462 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:17,480 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 (34)] Ended with exit code 0 [2023-12-24 12:59:17,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:59:17,668 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:17,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash -512490438, now seen corresponding path program 1 times [2023-12-24 12:59:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:17,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679299199] [2023-12-24 12:59:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:17,669 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 12:59:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:17,670 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:59:17,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 12:59:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:17,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:59:17,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:17,938 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 14 treesize of output 10 [2023-12-24 12:59:17,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:59:18,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:18,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 12:59:18,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:18,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2023-12-24 12:59:18,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:18,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 71 [2023-12-24 12:59:18,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:18,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 56 [2023-12-24 12:59:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 12:59:18,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:59:18,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:18,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679299199] [2023-12-24 12:59:18,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679299199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:59:18,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:59:18,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 12:59:18,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036199226] [2023-12-24 12:59:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:18,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 12:59:18,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:18,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 12:59:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:59:18,691 INFO L87 Difference]: Start difference. First operand 2336 states and 3164 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:59:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:21,561 INFO L93 Difference]: Finished difference Result 4606 states and 6271 transitions. [2023-12-24 12:59:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 12:59:21,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2023-12-24 12:59:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:21,582 INFO L225 Difference]: With dead ends: 4606 [2023-12-24 12:59:21,582 INFO L226 Difference]: Without dead ends: 2819 [2023-12-24 12:59:21,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:59:21,584 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 397 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:21,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1176 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 12:59:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2023-12-24 12:59:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2283. [2023-12-24 12:59:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2135 states have (on average 1.350351288056206) internal successors, (2883), 2157 states have internal predecessors, (2883), 108 states have call successors, (108), 39 states have call predecessors, (108), 39 states have return successors, (108), 86 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 12:59:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3099 transitions. [2023-12-24 12:59:21,848 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3099 transitions. Word has length 107 [2023-12-24 12:59:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:21,848 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 3099 transitions. [2023-12-24 12:59:21,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:59:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3099 transitions. [2023-12-24 12:59:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 12:59:21,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:21,850 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:21,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:22,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:59:22,056 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:22,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1887177626, now seen corresponding path program 1 times [2023-12-24 12:59:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:22,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487844592] [2023-12-24 12:59:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:22,057 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 12:59:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:22,058 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 12:59:22,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 12:59:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:22,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 12:59:22,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:22,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:22,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 64 [2023-12-24 12:59:22,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:22,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 35 [2023-12-24 12:59:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:59:22,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:59:22,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487844592] [2023-12-24 12:59:22,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487844592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:59:22,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:59:22,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 12:59:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860796574] [2023-12-24 12:59:22,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:22,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 12:59:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 12:59:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 12:59:22,478 INFO L87 Difference]: Start difference. First operand 2283 states and 3099 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:24,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 12:59:26,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 12:59:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:27,396 INFO L93 Difference]: Finished difference Result 4167 states and 5668 transitions. [2023-12-24 12:59:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:59:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2023-12-24 12:59:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:27,401 INFO L225 Difference]: With dead ends: 4167 [2023-12-24 12:59:27,401 INFO L226 Difference]: Without dead ends: 2349 [2023-12-24 12:59:27,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:59:27,404 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 102 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:27,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 883 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 12:59:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2023-12-24 12:59:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2167. [2023-12-24 12:59:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2019 states have (on average 1.3407627538385338) internal successors, (2707), 2041 states have internal predecessors, (2707), 108 states have call successors, (108), 39 states have call predecessors, (108), 39 states have return successors, (108), 86 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 12:59:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2923 transitions. [2023-12-24 12:59:27,648 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2923 transitions. Word has length 107 [2023-12-24 12:59:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:27,648 INFO L495 AbstractCegarLoop]: Abstraction has 2167 states and 2923 transitions. [2023-12-24 12:59:27,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2923 transitions. [2023-12-24 12:59:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-24 12:59:27,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:27,649 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:27,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:27,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 12:59:27,855 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:27,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1155860762, now seen corresponding path program 1 times [2023-12-24 12:59:27,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:27,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413441147] [2023-12-24 12:59:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:27,856 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 12:59:27,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:27,857 INFO L229 MonitoredProcess]: Starting monitored process 37 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 12:59:27,859 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 (37)] Waiting until timeout for monitored process [2023-12-24 12:59:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:28,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 12:59:28,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:28,135 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 12:59:28,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:59:28,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:59:28,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:28,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2023-12-24 12:59:28,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:28,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2023-12-24 12:59:28,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:28,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 37 [2023-12-24 12:59:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:59:28,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:59:28,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:28,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413441147] [2023-12-24 12:59:28,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413441147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:59:28,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:59:28,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 12:59:28,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236982080] [2023-12-24 12:59:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:28,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 12:59:28,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:28,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 12:59:28,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 12:59:28,428 INFO L87 Difference]: Start difference. First operand 2167 states and 2923 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:30,277 INFO L93 Difference]: Finished difference Result 4342 states and 5889 transitions. [2023-12-24 12:59:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 12:59:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2023-12-24 12:59:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:30,281 INFO L225 Difference]: With dead ends: 4342 [2023-12-24 12:59:30,281 INFO L226 Difference]: Without dead ends: 2672 [2023-12-24 12:59:30,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:59:30,283 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 251 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:30,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1002 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 12:59:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2023-12-24 12:59:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2243. [2023-12-24 12:59:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2095 states have (on average 1.3389021479713603) internal successors, (2805), 2117 states have internal predecessors, (2805), 108 states have call successors, (108), 39 states have call predecessors, (108), 39 states have return successors, (108), 86 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 12:59:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3021 transitions. [2023-12-24 12:59:30,518 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3021 transitions. Word has length 107 [2023-12-24 12:59:30,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:30,518 INFO L495 AbstractCegarLoop]: Abstraction has 2243 states and 3021 transitions. [2023-12-24 12:59:30,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3021 transitions. [2023-12-24 12:59:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:30,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:30,520 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:30,528 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 (37)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:30,726 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:30,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2080081764, now seen corresponding path program 1 times [2023-12-24 12:59:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:30,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496460316] [2023-12-24 12:59:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:30,727 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 12:59:30,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:30,728 INFO L229 MonitoredProcess]: Starting monitored process 38 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 12:59:30,761 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 (38)] Waiting until timeout for monitored process [2023-12-24 12:59:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:30,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 12:59:30,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:31,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 43 [2023-12-24 12:59:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 108 proven. 8 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 12:59:31,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:31,181 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 49 treesize of output 25 [2023-12-24 12:59:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 12:59:31,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:31,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496460316] [2023-12-24 12:59:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496460316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 12:59:31,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:59:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 12:59:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641166062] [2023-12-24 12:59:31,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:59:31,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 12:59:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 12:59:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 12:59:31,187 INFO L87 Difference]: Start difference. First operand 2243 states and 3021 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 12:59:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:31,944 INFO L93 Difference]: Finished difference Result 4333 states and 5829 transitions. [2023-12-24 12:59:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 12:59:31,945 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 108 [2023-12-24 12:59:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:31,948 INFO L225 Difference]: With dead ends: 4333 [2023-12-24 12:59:31,948 INFO L226 Difference]: Without dead ends: 2283 [2023-12-24 12:59:31,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 12:59:31,951 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 137 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:31,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 953 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 12:59:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2023-12-24 12:59:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2227. [2023-12-24 12:59:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2079 states have (on average 1.3338143338143338) internal successors, (2773), 2101 states have internal predecessors, (2773), 108 states have call successors, (108), 39 states have call predecessors, (108), 39 states have return successors, (108), 86 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 12:59:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2989 transitions. [2023-12-24 12:59:32,202 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2989 transitions. Word has length 108 [2023-12-24 12:59:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:32,202 INFO L495 AbstractCegarLoop]: Abstraction has 2227 states and 2989 transitions. [2023-12-24 12:59:32,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2023-12-24 12:59:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2989 transitions. [2023-12-24 12:59:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:32,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:32,203 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:32,224 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 (38)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:32,409 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:32,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash -652552426, now seen corresponding path program 1 times [2023-12-24 12:59:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479403109] [2023-12-24 12:59:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:32,410 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 12:59:32,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:32,411 INFO L229 MonitoredProcess]: Starting monitored process 39 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 12:59:32,432 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 (39)] Waiting until timeout for monitored process [2023-12-24 12:59:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:32,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 12:59:32,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:32,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:32,658 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 40 treesize of output 16 [2023-12-24 12:59:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:59:32,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:59:32,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:32,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479403109] [2023-12-24 12:59:32,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479403109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:59:32,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:59:32,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 12:59:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803312887] [2023-12-24 12:59:32,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:59:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:59:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 12:59:32,676 INFO L87 Difference]: Start difference. First operand 2227 states and 2989 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:34,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 12:59:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:35,143 INFO L93 Difference]: Finished difference Result 4367 states and 5876 transitions. [2023-12-24 12:59:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:59:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 12:59:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:35,146 INFO L225 Difference]: With dead ends: 4367 [2023-12-24 12:59:35,147 INFO L226 Difference]: Without dead ends: 2667 [2023-12-24 12:59:35,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 12:59:35,149 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 64 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:35,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 472 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 12:59:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2023-12-24 12:59:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2464. [2023-12-24 12:59:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2290 states have (on average 1.3235807860262008) internal successors, (3031), 2318 states have internal predecessors, (3031), 128 states have call successors, (128), 45 states have call predecessors, (128), 45 states have return successors, (128), 100 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-24 12:59:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3287 transitions. [2023-12-24 12:59:35,423 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3287 transitions. Word has length 108 [2023-12-24 12:59:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:35,423 INFO L495 AbstractCegarLoop]: Abstraction has 2464 states and 3287 transitions. [2023-12-24 12:59:35,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3287 transitions. [2023-12-24 12:59:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:35,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:35,425 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:35,432 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 (39)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:35,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:35,630 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:35,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1174141992, now seen corresponding path program 1 times [2023-12-24 12:59:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:35,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799031689] [2023-12-24 12:59:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:35,631 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 12:59:35,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:35,632 INFO L229 MonitoredProcess]: Starting monitored process 40 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 12:59:35,665 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 (40)] Waiting until timeout for monitored process [2023-12-24 12:59:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:35,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 12:59:35,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:35,882 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 12:59:35,883 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 14 treesize of output 10 [2023-12-24 12:59:35,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:59:35,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:59:36,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:36,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2023-12-24 12:59:36,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:36,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 76 [2023-12-24 12:59:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 12:59:36,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:59:36,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:36,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799031689] [2023-12-24 12:59:36,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799031689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:59:36,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:59:36,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 12:59:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230681345] [2023-12-24 12:59:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:36,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 12:59:36,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 12:59:36,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:59:36,309 INFO L87 Difference]: Start difference. First operand 2464 states and 3287 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:59:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:37,518 INFO L93 Difference]: Finished difference Result 4965 states and 6664 transitions. [2023-12-24 12:59:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 12:59:37,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2023-12-24 12:59:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:37,522 INFO L225 Difference]: With dead ends: 4965 [2023-12-24 12:59:37,523 INFO L226 Difference]: Without dead ends: 3042 [2023-12-24 12:59:37,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:59:37,524 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 512 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:37,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 367 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 12:59:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-12-24 12:59:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2243. [2023-12-24 12:59:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 2100 states have (on average 1.3223809523809524) internal successors, (2777), 2120 states have internal predecessors, (2777), 104 states have call successors, (104), 38 states have call predecessors, (104), 38 states have return successors, (104), 84 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 12:59:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2985 transitions. [2023-12-24 12:59:37,752 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2985 transitions. Word has length 108 [2023-12-24 12:59:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:37,762 INFO L495 AbstractCegarLoop]: Abstraction has 2243 states and 2985 transitions. [2023-12-24 12:59:37,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:59:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2985 transitions. [2023-12-24 12:59:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:37,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:37,763 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:37,784 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 (40)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:37,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:37,969 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:37,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:37,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1432307430, now seen corresponding path program 1 times [2023-12-24 12:59:37,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:37,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790475916] [2023-12-24 12:59:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:37,970 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 12:59:37,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:37,971 INFO L229 MonitoredProcess]: Starting monitored process 41 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 12:59:37,972 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 (41)] Waiting until timeout for monitored process [2023-12-24 12:59:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:38,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 12:59:38,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-24 12:59:38,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:59:38,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790475916] [2023-12-24 12:59:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790475916] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:38,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:59:38,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-12-24 12:59:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898728403] [2023-12-24 12:59:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:38,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 12:59:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 12:59:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-24 12:59:38,424 INFO L87 Difference]: Start difference. First operand 2243 states and 2985 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:38,757 INFO L93 Difference]: Finished difference Result 4231 states and 5682 transitions. [2023-12-24 12:59:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 12:59:38,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 12:59:38,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:38,760 INFO L225 Difference]: With dead ends: 4231 [2023-12-24 12:59:38,760 INFO L226 Difference]: Without dead ends: 2529 [2023-12-24 12:59:38,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:59:38,762 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 84 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:38,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 532 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 12:59:38,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2023-12-24 12:59:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2225. [2023-12-24 12:59:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2082 states have (on average 1.3121998078770414) internal successors, (2732), 2102 states have internal predecessors, (2732), 104 states have call successors, (104), 38 states have call predecessors, (104), 38 states have return successors, (104), 84 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 12:59:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2940 transitions. [2023-12-24 12:59:39,016 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2940 transitions. Word has length 108 [2023-12-24 12:59:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:39,017 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 2940 transitions. [2023-12-24 12:59:39,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2940 transitions. [2023-12-24 12:59:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:39,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:39,018 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:39,040 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 (41)] Ended with exit code 0 [2023-12-24 12:59:39,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:39,225 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:39,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash -910006393, now seen corresponding path program 1 times [2023-12-24 12:59:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638684954] [2023-12-24 12:59:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:39,227 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 12:59:39,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:39,228 INFO L229 MonitoredProcess]: Starting monitored process 42 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 12:59:39,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-24 12:59:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:39,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 12:59:39,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:39,522 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 12:59:39,524 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 14 treesize of output 10 [2023-12-24 12:59:39,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:59:39,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:59:39,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 12:59:39,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:39,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2023-12-24 12:59:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 12:59:39,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:59:39,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638684954] [2023-12-24 12:59:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638684954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:59:39,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:59:39,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 12:59:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481918642] [2023-12-24 12:59:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:39,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 12:59:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 12:59:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-24 12:59:39,877 INFO L87 Difference]: Start difference. First operand 2225 states and 2940 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:59:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:41,239 INFO L93 Difference]: Finished difference Result 4927 states and 6592 transitions. [2023-12-24 12:59:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 12:59:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-24 12:59:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:41,243 INFO L225 Difference]: With dead ends: 4927 [2023-12-24 12:59:41,243 INFO L226 Difference]: Without dead ends: 3243 [2023-12-24 12:59:41,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-24 12:59:41,246 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 369 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:41,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 575 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 12:59:41,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2023-12-24 12:59:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 2218. [2023-12-24 12:59:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2075 states have (on average 1.309879518072289) internal successors, (2718), 2095 states have internal predecessors, (2718), 104 states have call successors, (104), 38 states have call predecessors, (104), 38 states have return successors, (104), 84 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 12:59:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 2926 transitions. [2023-12-24 12:59:41,494 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 2926 transitions. Word has length 108 [2023-12-24 12:59:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:41,495 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 2926 transitions. [2023-12-24 12:59:41,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 12:59:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 2926 transitions. [2023-12-24 12:59:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:41,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:41,496 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:41,521 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 (42)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:41,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:41,703 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:41,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1381685980, now seen corresponding path program 1 times [2023-12-24 12:59:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:41,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025514649] [2023-12-24 12:59:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:41,704 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 12:59:41,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:41,705 INFO L229 MonitoredProcess]: Starting monitored process 43 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 12:59:41,706 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 (43)] Waiting until timeout for monitored process [2023-12-24 12:59:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:41,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 12:59:41,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:41,964 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 12:59:41,966 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 14 treesize of output 10 [2023-12-24 12:59:41,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 12:59:42,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 12:59:42,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:42,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 12:59:42,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:42,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 60 [2023-12-24 12:59:42,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:42,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 29 [2023-12-24 12:59:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-24 12:59:42,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 12:59:42,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025514649] [2023-12-24 12:59:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025514649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 12:59:42,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 12:59:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 12:59:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927673971] [2023-12-24 12:59:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:42,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 12:59:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 12:59:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-24 12:59:42,508 INFO L87 Difference]: Start difference. First operand 2218 states and 2926 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:59:45,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:45,457 INFO L93 Difference]: Finished difference Result 5036 states and 6649 transitions. [2023-12-24 12:59:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 12:59:45,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2023-12-24 12:59:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:45,477 INFO L225 Difference]: With dead ends: 5036 [2023-12-24 12:59:45,477 INFO L226 Difference]: Without dead ends: 3359 [2023-12-24 12:59:45,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2023-12-24 12:59:45,479 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 448 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:45,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1684 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 12:59:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2023-12-24 12:59:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 2250. [2023-12-24 12:59:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2107 states have (on average 1.305173232083531) internal successors, (2750), 2127 states have internal predecessors, (2750), 104 states have call successors, (104), 38 states have call predecessors, (104), 38 states have return successors, (104), 84 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 12:59:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2958 transitions. [2023-12-24 12:59:45,746 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2958 transitions. Word has length 108 [2023-12-24 12:59:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:45,747 INFO L495 AbstractCegarLoop]: Abstraction has 2250 states and 2958 transitions. [2023-12-24 12:59:45,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 12:59:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2958 transitions. [2023-12-24 12:59:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:45,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:45,749 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:45,755 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 (43)] Ended with exit code 0 [2023-12-24 12:59:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:45,952 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:45,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1270794746, now seen corresponding path program 1 times [2023-12-24 12:59:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580032986] [2023-12-24 12:59:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:45,953 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 12:59:45,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:45,954 INFO L229 MonitoredProcess]: Starting monitored process 44 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 12:59:45,956 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 (44)] Waiting until timeout for monitored process [2023-12-24 12:59:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:46,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 12:59:46,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:46,230 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 12:59:46,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 12:59:46,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2023-12-24 12:59:46,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:46,359 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 56 treesize of output 26 [2023-12-24 12:59:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 123 proven. 9 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 12:59:46,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:46,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580032986] [2023-12-24 12:59:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580032986] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1359421045] [2023-12-24 12:59:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:46,572 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 12:59:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 12:59:46,574 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 12:59:46,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2023-12-24 12:59:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:47,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 12:59:47,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:47,232 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 12:59:47,399 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 12:59:47,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:47,544 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 1 case distinctions, treesize of input 39 treesize of output 37 [2023-12-24 12:59:47,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:47,679 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 62 treesize of output 34 [2023-12-24 12:59:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 139 proven. 9 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-24 12:59:47,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:47,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1359421045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:47,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:59:47,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2023-12-24 12:59:47,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588067756] [2023-12-24 12:59:47,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:59:47,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 12:59:47,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 12:59:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-12-24 12:59:47,772 INFO L87 Difference]: Start difference. First operand 2250 states and 2958 transitions. Second operand has 18 states, 16 states have (on average 6.1875) internal successors, (99), 17 states have internal predecessors, (99), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-24 12:59:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:49,392 INFO L93 Difference]: Finished difference Result 4076 states and 5330 transitions. [2023-12-24 12:59:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 12:59:49,392 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.1875) internal successors, (99), 17 states have internal predecessors, (99), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24) Word has length 108 [2023-12-24 12:59:49,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:49,394 INFO L225 Difference]: With dead ends: 4076 [2023-12-24 12:59:49,394 INFO L226 Difference]: Without dead ends: 2267 [2023-12-24 12:59:49,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 12:59:49,396 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 786 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:49,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 554 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 12:59:49,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2023-12-24 12:59:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2025. [2023-12-24 12:59:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 1882 states have (on average 1.289585547290117) internal successors, (2427), 1902 states have internal predecessors, (2427), 104 states have call successors, (104), 38 states have call predecessors, (104), 38 states have return successors, (104), 84 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 12:59:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2635 transitions. [2023-12-24 12:59:49,656 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2635 transitions. Word has length 108 [2023-12-24 12:59:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:49,656 INFO L495 AbstractCegarLoop]: Abstraction has 2025 states and 2635 transitions. [2023-12-24 12:59:49,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.1875) internal successors, (99), 17 states have internal predecessors, (99), 7 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (24), 5 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-24 12:59:49,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2635 transitions. [2023-12-24 12:59:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:49,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:49,657 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:49,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (45)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:49,870 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 (44)] Ended with exit code 0 [2023-12-24 12:59:50,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:50,070 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:50,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:50,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2074151401, now seen corresponding path program 1 times [2023-12-24 12:59:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658293004] [2023-12-24 12:59:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:50,071 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 12:59:50,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:50,072 INFO L229 MonitoredProcess]: Starting monitored process 46 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 12:59:50,073 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 (46)] Waiting until timeout for monitored process [2023-12-24 12:59:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:50,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 12:59:50,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:50,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 12:59:50,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 12:59:50,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:50,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 12:59:51,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:51,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 74 [2023-12-24 12:59:51,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:51,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 86 [2023-12-24 12:59:51,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:51,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 69 [2023-12-24 12:59:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 18 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-24 12:59:51,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 12:59:52,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658293004] [2023-12-24 12:59:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658293004] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:52,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 12:59:52,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [23] total 30 [2023-12-24 12:59:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912464455] [2023-12-24 12:59:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 12:59:52,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 12:59:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:52,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 12:59:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2023-12-24 12:59:52,286 INFO L87 Difference]: Start difference. First operand 2025 states and 2635 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:53,730 INFO L93 Difference]: Finished difference Result 4184 states and 5469 transitions. [2023-12-24 12:59:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 12:59:53,731 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2023-12-24 12:59:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:53,733 INFO L225 Difference]: With dead ends: 4184 [2023-12-24 12:59:53,733 INFO L226 Difference]: Without dead ends: 2584 [2023-12-24 12:59:53,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 12:59:53,735 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 286 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:53,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1469 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 12:59:53,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2023-12-24 12:59:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1995. [2023-12-24 12:59:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1852 states have (on average 1.2899568034557236) internal successors, (2389), 1872 states have internal predecessors, (2389), 104 states have call successors, (104), 38 states have call predecessors, (104), 38 states have return successors, (104), 84 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-24 12:59:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2597 transitions. [2023-12-24 12:59:54,042 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2597 transitions. Word has length 108 [2023-12-24 12:59:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:54,042 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 2597 transitions. [2023-12-24 12:59:54,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 12:59:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2597 transitions. [2023-12-24 12:59:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-24 12:59:54,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:54,043 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:54,052 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 (46)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:54,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 12:59:54,250 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 12:59:54,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 12:59:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash -461106850, now seen corresponding path program 1 times [2023-12-24 12:59:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 12:59:54,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83663242] [2023-12-24 12:59:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:54,251 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 12:59:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 12:59:54,252 INFO L229 MonitoredProcess]: Starting monitored process 47 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 12:59:54,253 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 (47)] Waiting until timeout for monitored process [2023-12-24 12:59:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:54,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 12:59:54,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:54,597 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 12:59:54,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 30 [2023-12-24 12:59:55,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 63 [2023-12-24 12:59:55,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:55,157 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 192 treesize of output 78 [2023-12-24 12:59:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 12:59:55,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:55,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 12:59:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83663242] [2023-12-24 12:59:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83663242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291612203] [2023-12-24 12:59:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 12:59:55,378 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 12:59:55,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 12:59:55,379 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 12:59:55,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2023-12-24 12:59:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 12:59:56,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 12:59:56,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 12:59:56,205 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 12:59:56,617 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 62 treesize of output 30 [2023-12-24 12:59:56,995 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 101 treesize of output 57 [2023-12-24 12:59:57,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 12:59:57,163 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 174 treesize of output 78 [2023-12-24 12:59:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 12:59:57,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 12:59:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291612203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 12:59:57,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 12:59:57,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-24 12:59:57,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052740860] [2023-12-24 12:59:57,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 12:59:57,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 12:59:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 12:59:57,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 12:59:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2023-12-24 12:59:57,271 INFO L87 Difference]: Start difference. First operand 1995 states and 2597 transitions. Second operand has 23 states, 21 states have (on average 5.238095238095238) internal successors, (110), 20 states have internal predecessors, (110), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 12:59:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 12:59:59,276 INFO L93 Difference]: Finished difference Result 2173 states and 2783 transitions. [2023-12-24 12:59:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 12:59:59,276 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.238095238095238) internal successors, (110), 20 states have internal predecessors, (110), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2023-12-24 12:59:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 12:59:59,279 INFO L225 Difference]: With dead ends: 2173 [2023-12-24 12:59:59,279 INFO L226 Difference]: Without dead ends: 2171 [2023-12-24 12:59:59,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 12:59:59,281 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 560 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 12:59:59,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1179 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 12:59:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2023-12-24 12:59:59,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1767. [2023-12-24 12:59:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1622 states have (on average 1.2885326757090012) internal successors, (2090), 1639 states have internal predecessors, (2090), 98 states have call successors, (98), 46 states have call predecessors, (98), 46 states have return successors, (98), 81 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 12:59:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2286 transitions. [2023-12-24 12:59:59,648 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2286 transitions. Word has length 108 [2023-12-24 12:59:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 12:59:59,649 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 2286 transitions. [2023-12-24 12:59:59,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.238095238095238) internal successors, (110), 20 states have internal predecessors, (110), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 12:59:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2286 transitions. [2023-12-24 12:59:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-24 12:59:59,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 12:59:59,650 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:59,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2023-12-24 12:59:59,861 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 (47)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:00,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:00,051 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:00,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 725189345, now seen corresponding path program 1 times [2023-12-24 13:00:00,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:00,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207217320] [2023-12-24 13:00:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:00,052 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 13:00:00,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:00,053 INFO L229 MonitoredProcess]: Starting monitored process 49 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 13:00:00,087 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 (49)] Waiting until timeout for monitored process [2023-12-24 13:00:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:00,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:00:00,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:00,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:00,353 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 41 treesize of output 17 [2023-12-24 13:00:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:00,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:00,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:00,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207217320] [2023-12-24 13:00:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207217320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:00,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:00,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:00:00,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253256719] [2023-12-24 13:00:00,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:00,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:00:00,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:00:00,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:00:00,378 INFO L87 Difference]: Start difference. First operand 1767 states and 2286 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:02,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:00:04,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:00:06,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:00:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:06,845 INFO L93 Difference]: Finished difference Result 3301 states and 4274 transitions. [2023-12-24 13:00:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:00:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2023-12-24 13:00:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:06,849 INFO L225 Difference]: With dead ends: 3301 [2023-12-24 13:00:06,849 INFO L226 Difference]: Without dead ends: 1947 [2023-12-24 13:00:06,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:00:06,850 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 80 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:06,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 439 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-24 13:00:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2023-12-24 13:00:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1772. [2023-12-24 13:00:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1625 states have (on average 1.2806153846153847) internal successors, (2081), 1642 states have internal predecessors, (2081), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 81 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 13:00:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2277 transitions. [2023-12-24 13:00:07,140 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2277 transitions. Word has length 109 [2023-12-24 13:00:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:07,140 INFO L495 AbstractCegarLoop]: Abstraction has 1772 states and 2277 transitions. [2023-12-24 13:00:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2277 transitions. [2023-12-24 13:00:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 13:00:07,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:07,141 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:07,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:07,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:07,348 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:07,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:07,348 INFO L85 PathProgramCache]: Analyzing trace with hash 974745532, now seen corresponding path program 1 times [2023-12-24 13:00:07,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:07,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110190870] [2023-12-24 13:00:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:07,348 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 13:00:07,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:07,349 INFO L229 MonitoredProcess]: Starting monitored process 50 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 13:00:07,350 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 (50)] Waiting until timeout for monitored process [2023-12-24 13:00:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:07,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:00:07,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:07,599 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 13:00:07,630 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 37 treesize of output 25 [2023-12-24 13:00:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:07,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:07,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110190870] [2023-12-24 13:00:07,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110190870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:07,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:07,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 13:00:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705219402] [2023-12-24 13:00:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:00:07,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:00:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:00:07,656 INFO L87 Difference]: Start difference. First operand 1772 states and 2277 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:08,488 INFO L93 Difference]: Finished difference Result 4055 states and 5240 transitions. [2023-12-24 13:00:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 13:00:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2023-12-24 13:00:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:08,492 INFO L225 Difference]: With dead ends: 4055 [2023-12-24 13:00:08,492 INFO L226 Difference]: Without dead ends: 2696 [2023-12-24 13:00:08,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:00:08,494 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 197 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:08,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1027 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:00:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2023-12-24 13:00:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 1976. [2023-12-24 13:00:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1829 states have (on average 1.2843083652268998) internal successors, (2349), 1846 states have internal predecessors, (2349), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 81 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 13:00:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2545 transitions. [2023-12-24 13:00:08,764 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2545 transitions. Word has length 111 [2023-12-24 13:00:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:08,764 INFO L495 AbstractCegarLoop]: Abstraction has 1976 states and 2545 transitions. [2023-12-24 13:00:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2545 transitions. [2023-12-24 13:00:08,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-24 13:00:08,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:08,765 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:08,771 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 (50)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:08,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:08,972 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:08,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -413842541, now seen corresponding path program 1 times [2023-12-24 13:00:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223220909] [2023-12-24 13:00:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:08,973 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 13:00:08,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:08,974 INFO L229 MonitoredProcess]: Starting monitored process 51 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 13:00:08,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-24 13:00:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:09,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:00:09,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:09,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:09,276 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 36 treesize of output 16 [2023-12-24 13:00:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:09,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:09,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223220909] [2023-12-24 13:00:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223220909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:09,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:00:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523741465] [2023-12-24 13:00:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:09,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:00:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:00:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:00:09,317 INFO L87 Difference]: Start difference. First operand 1976 states and 2545 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:10,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:10,155 INFO L93 Difference]: Finished difference Result 3629 states and 4680 transitions. [2023-12-24 13:00:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:00:10,156 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2023-12-24 13:00:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:10,158 INFO L225 Difference]: With dead ends: 3629 [2023-12-24 13:00:10,158 INFO L226 Difference]: Without dead ends: 2066 [2023-12-24 13:00:10,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:00:10,160 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 80 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:10,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 544 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:00:10,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2023-12-24 13:00:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1856. [2023-12-24 13:00:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1723 states have (on average 1.2849680789320952) internal successors, (2214), 1736 states have internal predecessors, (2214), 88 states have call successors, (88), 44 states have call predecessors, (88), 44 states have return successors, (88), 75 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-24 13:00:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2390 transitions. [2023-12-24 13:00:10,444 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2390 transitions. Word has length 111 [2023-12-24 13:00:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:10,444 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2390 transitions. [2023-12-24 13:00:10,444 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, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2390 transitions. [2023-12-24 13:00:10,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 13:00:10,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:10,445 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:10,453 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 (51)] Ended with exit code 0 [2023-12-24 13:00:10,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:10,650 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:10,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash 140588216, now seen corresponding path program 1 times [2023-12-24 13:00:10,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:10,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051648374] [2023-12-24 13:00:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:10,651 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 13:00:10,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:10,652 INFO L229 MonitoredProcess]: Starting monitored process 52 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 13:00:10,657 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 (52)] Waiting until timeout for monitored process [2023-12-24 13:00:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:10,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 13:00:10,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:10,988 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 13:00:11,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 13:00:11,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 65 [2023-12-24 13:00:11,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:11,627 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 142 treesize of output 58 [2023-12-24 13:00:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 13:00:11,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:12,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:12,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051648374] [2023-12-24 13:00:12,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051648374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:12,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [545018740] [2023-12-24 13:00:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:12,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:00:12,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:00:12,115 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:00:12,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2023-12-24 13:00:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:13,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 13:00:13,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:13,261 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 13:00:13,673 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 64 treesize of output 32 [2023-12-24 13:00:15,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:15,147 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 1 case distinctions, treesize of input 142 treesize of output 81 [2023-12-24 13:00:15,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:15,673 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 190 treesize of output 82 [2023-12-24 13:00:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 13:00:15,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:16,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [545018740] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:16,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:00:16,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14, 19] total 36 [2023-12-24 13:00:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581990893] [2023-12-24 13:00:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:16,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:00:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:00:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 13:00:16,377 INFO L87 Difference]: Start difference. First operand 1856 states and 2390 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:18,662 INFO L93 Difference]: Finished difference Result 2509 states and 3186 transitions. [2023-12-24 13:00:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 13:00:18,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 13:00:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:18,666 INFO L225 Difference]: With dead ends: 2509 [2023-12-24 13:00:18,667 INFO L226 Difference]: Without dead ends: 2507 [2023-12-24 13:00:18,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2023-12-24 13:00:18,669 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 76 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:18,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1107 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 2 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 13:00:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2023-12-24 13:00:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2170. [2023-12-24 13:00:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2028 states have (on average 1.2741617357001973) internal successors, (2584), 2044 states have internal predecessors, (2584), 94 states have call successors, (94), 47 states have call predecessors, (94), 47 states have return successors, (94), 78 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-24 13:00:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 2772 transitions. [2023-12-24 13:00:18,946 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 2772 transitions. Word has length 113 [2023-12-24 13:00:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:18,946 INFO L495 AbstractCegarLoop]: Abstraction has 2170 states and 2772 transitions. [2023-12-24 13:00:18,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 2772 transitions. [2023-12-24 13:00:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 13:00:18,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:18,947 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:18,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:19,161 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 (52)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:19,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:19,362 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:19,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1915595578, now seen corresponding path program 1 times [2023-12-24 13:00:19,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:19,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018350088] [2023-12-24 13:00:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:19,363 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 13:00:19,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:19,364 INFO L229 MonitoredProcess]: Starting monitored process 54 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 13:00:19,364 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 (54)] Waiting until timeout for monitored process [2023-12-24 13:00:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:19,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:00:19,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:19,721 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 13:00:19,883 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 68 treesize of output 32 [2023-12-24 13:00:20,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:20,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 56 [2023-12-24 13:00:21,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:21,049 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 148 treesize of output 58 [2023-12-24 13:00:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 13:00:21,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:21,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:21,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018350088] [2023-12-24 13:00:21,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018350088] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:21,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:00:21,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2023-12-24 13:00:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228462340] [2023-12-24 13:00:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:21,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:00:21,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:00:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:00:21,451 INFO L87 Difference]: Start difference. First operand 2170 states and 2772 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:22,079 INFO L93 Difference]: Finished difference Result 3917 states and 5022 transitions. [2023-12-24 13:00:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:00:22,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 13:00:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:22,083 INFO L225 Difference]: With dead ends: 3917 [2023-12-24 13:00:22,083 INFO L226 Difference]: Without dead ends: 2196 [2023-12-24 13:00:22,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:00:22,085 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 86 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:22,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 445 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:00:22,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2023-12-24 13:00:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2161. [2023-12-24 13:00:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2019 states have (on average 1.2738979692917285) internal successors, (2572), 2035 states have internal predecessors, (2572), 94 states have call successors, (94), 47 states have call predecessors, (94), 47 states have return successors, (94), 78 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-24 13:00:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2760 transitions. [2023-12-24 13:00:22,358 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2760 transitions. Word has length 113 [2023-12-24 13:00:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:22,358 INFO L495 AbstractCegarLoop]: Abstraction has 2161 states and 2760 transitions. [2023-12-24 13:00:22,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2760 transitions. [2023-12-24 13:00:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 13:00:22,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:22,359 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:22,367 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 (54)] Ended with exit code 0 [2023-12-24 13:00:22,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:22,568 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:22,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:22,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1664850118, now seen corresponding path program 1 times [2023-12-24 13:00:22,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:22,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702167860] [2023-12-24 13:00:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:22,569 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 13:00:22,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:22,571 INFO L229 MonitoredProcess]: Starting monitored process 55 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 13:00:22,572 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 (55)] Waiting until timeout for monitored process [2023-12-24 13:00:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:22,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:00:22,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:22,942 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 13:00:23,134 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 68 treesize of output 32 [2023-12-24 13:00:24,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:24,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 57 [2023-12-24 13:00:24,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:24,374 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 149 treesize of output 59 [2023-12-24 13:00:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 13:00:24,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:24,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702167860] [2023-12-24 13:00:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702167860] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:24,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:00:24,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2023-12-24 13:00:24,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605912134] [2023-12-24 13:00:24,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:24,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:00:24,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:00:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:00:24,737 INFO L87 Difference]: Start difference. First operand 2161 states and 2760 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:25,263 INFO L93 Difference]: Finished difference Result 3921 states and 5013 transitions. [2023-12-24 13:00:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:00:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2023-12-24 13:00:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:25,267 INFO L225 Difference]: With dead ends: 3921 [2023-12-24 13:00:25,267 INFO L226 Difference]: Without dead ends: 2209 [2023-12-24 13:00:25,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:00:25,269 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 49 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:25,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 548 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:00:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2023-12-24 13:00:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1382. [2023-12-24 13:00:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1311 states have (on average 1.2677345537757436) internal successors, (1662), 1317 states have internal predecessors, (1662), 44 states have call successors, (44), 26 states have call predecessors, (44), 26 states have return successors, (44), 38 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-24 13:00:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1750 transitions. [2023-12-24 13:00:25,416 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1750 transitions. Word has length 113 [2023-12-24 13:00:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:25,416 INFO L495 AbstractCegarLoop]: Abstraction has 1382 states and 1750 transitions. [2023-12-24 13:00:25,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:25,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1750 transitions. [2023-12-24 13:00:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 13:00:25,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:25,417 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:25,426 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 (55)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:25,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:25,624 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:25,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash 110157244, now seen corresponding path program 1 times [2023-12-24 13:00:25,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:25,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294306083] [2023-12-24 13:00:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:25,625 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 13:00:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:25,626 INFO L229 MonitoredProcess]: Starting monitored process 56 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 13:00:25,627 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 (56)] Waiting until timeout for monitored process [2023-12-24 13:00:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:25,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 13:00:25,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:25,996 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 13:00:26,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 67 [2023-12-24 13:00:26,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:26,579 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 166 treesize of output 58 [2023-12-24 13:00:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 13:00:26,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:27,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294306083] [2023-12-24 13:00:27,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294306083] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1232341854] [2023-12-24 13:00:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:27,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:00:27,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:00:27,055 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:00:27,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2023-12-24 13:00:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:28,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 13:00:28,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:28,138 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 13:00:28,535 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 64 treesize of output 32 [2023-12-24 13:00:29,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:29,675 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 1 case distinctions, treesize of input 151 treesize of output 90 [2023-12-24 13:00:30,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:30,130 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 218 treesize of output 98 [2023-12-24 13:00:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 13:00:30,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1232341854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:31,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:00:31,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 26 [2023-12-24 13:00:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463152148] [2023-12-24 13:00:31,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:00:31,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 13:00:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 13:00:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 13:00:31,074 INFO L87 Difference]: Start difference. First operand 1382 states and 1750 transitions. Second operand has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 26 states have internal predecessors, (115), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-12-24 13:00:37,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 13:00:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:37,776 INFO L93 Difference]: Finished difference Result 5376 states and 6789 transitions. [2023-12-24 13:00:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-24 13:00:37,777 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 26 states have internal predecessors, (115), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 113 [2023-12-24 13:00:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:37,782 INFO L225 Difference]: With dead ends: 5376 [2023-12-24 13:00:37,782 INFO L226 Difference]: Without dead ends: 5374 [2023-12-24 13:00:37,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 256 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=747, Invalid=5105, Unknown=0, NotChecked=0, Total=5852 [2023-12-24 13:00:37,784 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 761 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:37,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3151 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-24 13:00:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2023-12-24 13:00:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 2758. [2023-12-24 13:00:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2616 states have (on average 1.2641437308868502) internal successors, (3307), 2633 states have internal predecessors, (3307), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 13:00:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3485 transitions. [2023-12-24 13:00:38,123 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3485 transitions. Word has length 113 [2023-12-24 13:00:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:38,123 INFO L495 AbstractCegarLoop]: Abstraction has 2758 states and 3485 transitions. [2023-12-24 13:00:38,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 26 states have internal predecessors, (115), 5 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2023-12-24 13:00:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3485 transitions. [2023-12-24 13:00:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 13:00:38,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:38,124 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:38,131 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 (56)] Ended with exit code 0 [2023-12-24 13:00:38,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (57)] Ended with exit code 0 [2023-12-24 13:00:38,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:00:38,530 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:38,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:38,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1987220474, now seen corresponding path program 1 times [2023-12-24 13:00:38,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:38,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129235383] [2023-12-24 13:00:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:38,531 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 13:00:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:38,533 INFO L229 MonitoredProcess]: Starting monitored process 58 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 13:00:38,566 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 (58)] Waiting until timeout for monitored process [2023-12-24 13:00:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:38,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 13:00:38,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 13:00:38,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:38,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129235383] [2023-12-24 13:00:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129235383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:38,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 13:00:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839126492] [2023-12-24 13:00:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:38,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 13:00:38,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 13:00:38,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:00:38,776 INFO L87 Difference]: Start difference. First operand 2758 states and 3485 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:00:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:39,131 INFO L93 Difference]: Finished difference Result 5265 states and 6680 transitions. [2023-12-24 13:00:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:00:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-24 13:00:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:39,135 INFO L225 Difference]: With dead ends: 5265 [2023-12-24 13:00:39,135 INFO L226 Difference]: Without dead ends: 2786 [2023-12-24 13:00:39,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:00:39,138 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 7 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:39,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 387 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:00:39,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-12-24 13:00:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2758. [2023-12-24 13:00:39,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 2616 states have (on average 1.261085626911315) internal successors, (3299), 2633 states have internal predecessors, (3299), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 13:00:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3477 transitions. [2023-12-24 13:00:39,478 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3477 transitions. Word has length 113 [2023-12-24 13:00:39,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:39,478 INFO L495 AbstractCegarLoop]: Abstraction has 2758 states and 3477 transitions. [2023-12-24 13:00:39,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-24 13:00:39,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3477 transitions. [2023-12-24 13:00:39,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 13:00:39,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:39,480 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:39,485 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 (58)] Ended with exit code 0 [2023-12-24 13:00:39,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:39,685 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:39,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1558552071, now seen corresponding path program 1 times [2023-12-24 13:00:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753905202] [2023-12-24 13:00:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:39,686 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 13:00:39,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:39,698 INFO L229 MonitoredProcess]: Starting monitored process 59 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 13:00:39,700 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 (59)] Waiting until timeout for monitored process [2023-12-24 13:00:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:39,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 13:00:39,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:40,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:40,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 52 [2023-12-24 13:00:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:40,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:40,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:40,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753905202] [2023-12-24 13:00:40,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753905202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:40,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:40,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 13:00:40,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674472511] [2023-12-24 13:00:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:40,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:00:40,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:40,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:00:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:00:40,220 INFO L87 Difference]: Start difference. First operand 2758 states and 3477 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:42,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:42,830 INFO L93 Difference]: Finished difference Result 7771 states and 9692 transitions. [2023-12-24 13:00:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 13:00:42,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2023-12-24 13:00:42,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:42,836 INFO L225 Difference]: With dead ends: 7771 [2023-12-24 13:00:42,836 INFO L226 Difference]: Without dead ends: 5539 [2023-12-24 13:00:42,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2023-12-24 13:00:42,838 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 432 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:42,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1490 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 13:00:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2023-12-24 13:00:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 3052. [2023-12-24 13:00:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 2910 states have (on average 1.2628865979381443) internal successors, (3675), 2927 states have internal predecessors, (3675), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 13:00:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 3853 transitions. [2023-12-24 13:00:43,203 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 3853 transitions. Word has length 114 [2023-12-24 13:00:43,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:43,204 INFO L495 AbstractCegarLoop]: Abstraction has 3052 states and 3853 transitions. [2023-12-24 13:00:43,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 3853 transitions. [2023-12-24 13:00:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 13:00:43,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:43,205 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:43,211 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 (59)] Ended with exit code 0 [2023-12-24 13:00:43,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:43,407 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:43,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash -878493701, now seen corresponding path program 1 times [2023-12-24 13:00:43,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:43,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562995304] [2023-12-24 13:00:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:43,408 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 13:00:43,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:43,409 INFO L229 MonitoredProcess]: Starting monitored process 60 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 13:00:43,453 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 (60)] Waiting until timeout for monitored process [2023-12-24 13:00:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:43,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 13:00:43,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:43,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:00:43,834 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 36 treesize of output 29 [2023-12-24 13:00:44,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:44,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2023-12-24 13:00:44,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:44,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2023-12-24 13:00:44,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:44,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2023-12-24 13:00:44,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:44,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 33 [2023-12-24 13:00:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 181 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-24 13:00:45,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:45,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:45,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562995304] [2023-12-24 13:00:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562995304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:45,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [223122752] [2023-12-24 13:00:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:45,333 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:00:45,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:00:45,334 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:00:45,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2023-12-24 13:00:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:46,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 13:00:46,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:46,076 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 13:00:46,324 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 13:00:46,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 13:00:46,544 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:46,545 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 1 case distinctions, treesize of input 39 treesize of output 37 [2023-12-24 13:00:46,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:46,674 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 43 treesize of output 23 [2023-12-24 13:00:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 131 proven. 9 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 13:00:46,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:00:46,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [223122752] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:00:46,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:00:46,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 29 [2023-12-24 13:00:46,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317495024] [2023-12-24 13:00:46,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:00:46,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 13:00:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 13:00:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 13:00:46,851 INFO L87 Difference]: Start difference. First operand 3052 states and 3853 transitions. Second operand has 29 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 9 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2023-12-24 13:00:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:52,990 INFO L93 Difference]: Finished difference Result 6880 states and 8578 transitions. [2023-12-24 13:00:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-24 13:00:52,990 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 9 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) Word has length 114 [2023-12-24 13:00:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:52,993 INFO L225 Difference]: With dead ends: 6880 [2023-12-24 13:00:52,993 INFO L226 Difference]: Without dead ends: 4354 [2023-12-24 13:00:52,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1292, Invalid=5514, Unknown=0, NotChecked=0, Total=6806 [2023-12-24 13:00:52,996 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1241 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:52,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1530 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 13:00:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2023-12-24 13:00:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 3028. [2023-12-24 13:00:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2886 states have (on average 1.253984753984754) internal successors, (3619), 2903 states have internal predecessors, (3619), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 13:00:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 3797 transitions. [2023-12-24 13:00:53,351 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 3797 transitions. Word has length 114 [2023-12-24 13:00:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:53,351 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 3797 transitions. [2023-12-24 13:00:53,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 9 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2023-12-24 13:00:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 3797 transitions. [2023-12-24 13:00:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-24 13:00:53,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:53,352 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:53,358 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 (60)] Ended with exit code 0 [2023-12-24 13:00:53,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:53,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:00:53,755 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:53,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2145358085, now seen corresponding path program 1 times [2023-12-24 13:00:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:53,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395089272] [2023-12-24 13:00:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:53,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:00:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:53,756 INFO L229 MonitoredProcess]: Starting monitored process 62 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 13:00:53,757 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 (62)] Waiting until timeout for monitored process [2023-12-24 13:00:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:53,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 13:00:54,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:54,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:54,166 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 44 treesize of output 20 [2023-12-24 13:00:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:54,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:54,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395089272] [2023-12-24 13:00:54,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395089272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:54,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:54,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 13:00:54,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332307394] [2023-12-24 13:00:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:00:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:00:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 13:00:54,201 INFO L87 Difference]: Start difference. First operand 3028 states and 3797 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:00:57,282 INFO L93 Difference]: Finished difference Result 7884 states and 9689 transitions. [2023-12-24 13:00:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 13:00:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2023-12-24 13:00:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:00:57,288 INFO L225 Difference]: With dead ends: 7884 [2023-12-24 13:00:57,288 INFO L226 Difference]: Without dead ends: 5382 [2023-12-24 13:00:57,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:00:57,292 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 315 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:00:57,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1089 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 13:00:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2023-12-24 13:00:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 3212. [2023-12-24 13:00:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3070 states have (on average 1.2452768729641694) internal successors, (3823), 3087 states have internal predecessors, (3823), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 13:00:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 4001 transitions. [2023-12-24 13:00:57,737 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 4001 transitions. Word has length 114 [2023-12-24 13:00:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:00:57,737 INFO L495 AbstractCegarLoop]: Abstraction has 3212 states and 4001 transitions. [2023-12-24 13:00:57,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:00:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 4001 transitions. [2023-12-24 13:00:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 13:00:57,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:00:57,739 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:57,745 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 (62)] Forceful destruction successful, exit code 0 [2023-12-24 13:00:57,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:00:57,945 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:00:57,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:00:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1433896843, now seen corresponding path program 1 times [2023-12-24 13:00:57,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:00:57,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003454838] [2023-12-24 13:00:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:00:57,947 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 13:00:57,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:00:57,948 INFO L229 MonitoredProcess]: Starting monitored process 63 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 13:00:57,949 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 (63)] Waiting until timeout for monitored process [2023-12-24 13:00:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:00:58,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 13:00:58,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:00:58,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:00:58,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 37 [2023-12-24 13:00:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:00:58,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:00:58,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:00:58,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003454838] [2023-12-24 13:00:58,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003454838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:00:58,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:00:58,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 13:00:58,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996474582] [2023-12-24 13:00:58,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:00:58,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:00:58,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:00:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:00:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-24 13:00:58,640 INFO L87 Difference]: Start difference. First operand 3212 states and 4001 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:01:02,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:01:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:01:07,502 INFO L93 Difference]: Finished difference Result 7397 states and 9136 transitions. [2023-12-24 13:01:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 13:01:07,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 115 [2023-12-24 13:01:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:01:07,508 INFO L225 Difference]: With dead ends: 7397 [2023-12-24 13:01:07,508 INFO L226 Difference]: Without dead ends: 4711 [2023-12-24 13:01:07,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:01:07,512 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 261 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:01:07,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1046 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-24 13:01:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2023-12-24 13:01:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 3092. [2023-12-24 13:01:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 2950 states have (on average 1.2430508474576272) internal successors, (3667), 2967 states have internal predecessors, (3667), 89 states have call successors, (89), 52 states have call predecessors, (89), 52 states have return successors, (89), 72 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-24 13:01:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 3845 transitions. [2023-12-24 13:01:07,932 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 3845 transitions. Word has length 115 [2023-12-24 13:01:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:01:07,933 INFO L495 AbstractCegarLoop]: Abstraction has 3092 states and 3845 transitions. [2023-12-24 13:01:07,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:01:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 3845 transitions. [2023-12-24 13:01:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 13:01:07,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:01:07,934 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:07,940 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 (63)] Ended with exit code 0 [2023-12-24 13:01:08,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:01:08,141 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:01:08,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:01:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1922061578, now seen corresponding path program 1 times [2023-12-24 13:01:08,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:01:08,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657949121] [2023-12-24 13:01:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:08,141 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 13:01:08,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:01:08,142 INFO L229 MonitoredProcess]: Starting monitored process 64 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 13:01:08,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-12-24 13:01:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:08,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 13:01:08,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:08,511 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 8 treesize of output 1 [2023-12-24 13:01:09,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 65 [2023-12-24 13:01:09,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:09,265 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 164 treesize of output 56 [2023-12-24 13:01:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 13:01:09,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:01:09,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:01:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657949121] [2023-12-24 13:01:09,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657949121] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:01:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1188092008] [2023-12-24 13:01:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:09,829 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:01:09,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:01:09,830 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:01:09,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2023-12-24 13:01:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:10,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 13:01:10,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:11,087 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 13:01:12,015 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 101 treesize of output 57 [2023-12-24 13:01:12,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:12,324 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 128 treesize of output 56 [2023-12-24 13:01:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 13:01:12,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:01:12,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1188092008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:01:12,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:01:12,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2023-12-24 13:01:12,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121798119] [2023-12-24 13:01:12,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:01:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 13:01:12,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:01:12,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 13:01:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 13:01:12,559 INFO L87 Difference]: Start difference. First operand 3092 states and 3845 transitions. Second operand has 29 states, 27 states have (on average 4.518518518518518) internal successors, (122), 26 states have internal predecessors, (122), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 13:01:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:01:15,627 INFO L93 Difference]: Finished difference Result 4745 states and 5861 transitions. [2023-12-24 13:01:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 13:01:15,629 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.518518518518518) internal successors, (122), 26 states have internal predecessors, (122), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 115 [2023-12-24 13:01:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:01:15,633 INFO L225 Difference]: With dead ends: 4745 [2023-12-24 13:01:15,633 INFO L226 Difference]: Without dead ends: 4743 [2023-12-24 13:01:15,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=532, Invalid=3008, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 13:01:15,634 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 556 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:01:15,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 2135 Invalid, 1206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 13:01:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2023-12-24 13:01:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4179. [2023-12-24 13:01:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 4001 states have (on average 1.2474381404648838) internal successors, (4991), 4019 states have internal predecessors, (4991), 111 states have call successors, (111), 66 states have call predecessors, (111), 66 states have return successors, (111), 93 states have call predecessors, (111), 111 states have call successors, (111) [2023-12-24 13:01:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 5213 transitions. [2023-12-24 13:01:16,182 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 5213 transitions. Word has length 115 [2023-12-24 13:01:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:01:16,182 INFO L495 AbstractCegarLoop]: Abstraction has 4179 states and 5213 transitions. [2023-12-24 13:01:16,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.518518518518518) internal successors, (122), 26 states have internal predecessors, (122), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 13:01:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 5213 transitions. [2023-12-24 13:01:16,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-24 13:01:16,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:01:16,184 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:16,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (65)] Forceful destruction successful, exit code 0 [2023-12-24 13:01:16,401 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 (64)] Forceful destruction successful, exit code 0 [2023-12-24 13:01:16,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:01:16,601 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:01:16,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:01:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1602172152, now seen corresponding path program 1 times [2023-12-24 13:01:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:01:16,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890256556] [2023-12-24 13:01:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:16,602 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 13:01:16,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:01:16,603 INFO L229 MonitoredProcess]: Starting monitored process 66 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 13:01:16,604 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 (66)] Waiting until timeout for monitored process [2023-12-24 13:01:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:16,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 13:01:16,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-24 13:01:16,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:01:16,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:01:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890256556] [2023-12-24 13:01:16,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890256556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:01:16,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:01:16,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:01:16,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222841691] [2023-12-24 13:01:16,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:01:16,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:01:16,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:01:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:01:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:01:16,874 INFO L87 Difference]: Start difference. First operand 4179 states and 5213 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:01:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:01:17,368 INFO L93 Difference]: Finished difference Result 6505 states and 8121 transitions. [2023-12-24 13:01:17,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:01:17,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2023-12-24 13:01:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:01:17,371 INFO L225 Difference]: With dead ends: 6505 [2023-12-24 13:01:17,371 INFO L226 Difference]: Without dead ends: 2766 [2023-12-24 13:01:17,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:01:17,373 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 7 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:01:17,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 545 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:01:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2023-12-24 13:01:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2708. [2023-12-24 13:01:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2586 states have (on average 1.2474864655839133) internal successors, (3226), 2596 states have internal predecessors, (3226), 75 states have call successors, (75), 46 states have call predecessors, (75), 46 states have return successors, (75), 65 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-24 13:01:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3376 transitions. [2023-12-24 13:01:17,697 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3376 transitions. Word has length 115 [2023-12-24 13:01:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:01:17,698 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 3376 transitions. [2023-12-24 13:01:17,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-24 13:01:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3376 transitions. [2023-12-24 13:01:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-24 13:01:17,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:01:17,699 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:17,705 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 (66)] Ended with exit code 0 [2023-12-24 13:01:17,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:01:17,905 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:01:17,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:01:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash 556431063, now seen corresponding path program 1 times [2023-12-24 13:01:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:01:17,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963664528] [2023-12-24 13:01:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:17,906 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 13:01:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:01:17,907 INFO L229 MonitoredProcess]: Starting monitored process 67 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 13:01:17,908 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 (67)] Waiting until timeout for monitored process [2023-12-24 13:01:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:18,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:01:18,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:18,287 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 13:01:18,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-24 13:01:18,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 65 [2023-12-24 13:01:18,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:18,861 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 194 treesize of output 80 [2023-12-24 13:01:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 13:01:18,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:01:19,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:01:19,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963664528] [2023-12-24 13:01:19,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963664528] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:01:19,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [395802557] [2023-12-24 13:01:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:19,163 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:01:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:01:19,164 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:01:19,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2023-12-24 13:01:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:20,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 13:01:20,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:20,198 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 42 treesize of output 22 [2023-12-24 13:01:20,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:20,523 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 1 case distinctions, treesize of input 90 treesize of output 53 [2023-12-24 13:01:21,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:21,189 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 1 case distinctions, treesize of input 129 treesize of output 73 [2023-12-24 13:01:21,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:21,408 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 176 treesize of output 80 [2023-12-24 13:01:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 13:01:21,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:01:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [395802557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:01:21,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:01:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2023-12-24 13:01:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556472017] [2023-12-24 13:01:21,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:01:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 13:01:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:01:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 13:01:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:01:21,557 INFO L87 Difference]: Start difference. First operand 2708 states and 3376 transitions. Second operand has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 17 states have internal predecessors, (119), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 13:01:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:01:23,996 INFO L93 Difference]: Finished difference Result 5711 states and 7066 transitions. [2023-12-24 13:01:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 13:01:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 17 states have internal predecessors, (119), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 116 [2023-12-24 13:01:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:01:24,001 INFO L225 Difference]: With dead ends: 5711 [2023-12-24 13:01:24,001 INFO L226 Difference]: Without dead ends: 5709 [2023-12-24 13:01:24,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=338, Invalid=1642, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 13:01:24,002 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 645 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:01:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1335 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 13:01:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5709 states. [2023-12-24 13:01:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5709 to 3692. [2023-12-24 13:01:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3510 states have (on average 1.2564102564102564) internal successors, (4410), 3519 states have internal predecessors, (4410), 111 states have call successors, (111), 70 states have call predecessors, (111), 70 states have return successors, (111), 102 states have call predecessors, (111), 111 states have call successors, (111) [2023-12-24 13:01:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4632 transitions. [2023-12-24 13:01:24,417 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4632 transitions. Word has length 116 [2023-12-24 13:01:24,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:01:24,417 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 4632 transitions. [2023-12-24 13:01:24,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 17 states have internal predecessors, (119), 4 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 13:01:24,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4632 transitions. [2023-12-24 13:01:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 13:01:24,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:01:24,419 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:24,427 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 (67)] Forceful destruction successful, exit code 0 [2023-12-24 13:01:24,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2023-12-24 13:01:24,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:01:24,835 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:01:24,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:01:24,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1954341506, now seen corresponding path program 1 times [2023-12-24 13:01:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:01:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58396322] [2023-12-24 13:01:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:24,837 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 13:01:24,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:01:24,838 INFO L229 MonitoredProcess]: Starting monitored process 69 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 13:01:24,839 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 (69)] Waiting until timeout for monitored process [2023-12-24 13:01:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:25,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 13:01:25,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:25,105 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 13:01:25,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:25,199 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 45 treesize of output 21 [2023-12-24 13:01:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:01:25,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:01:25,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:01:25,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58396322] [2023-12-24 13:01:25,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58396322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:01:25,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:01:25,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:01:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316959541] [2023-12-24 13:01:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:01:25,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:01:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:01:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:01:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:01:25,214 INFO L87 Difference]: Start difference. First operand 3692 states and 4632 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:01:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:01:26,816 INFO L93 Difference]: Finished difference Result 7902 states and 9902 transitions. [2023-12-24 13:01:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:01:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2023-12-24 13:01:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:01:26,821 INFO L225 Difference]: With dead ends: 7902 [2023-12-24 13:01:26,821 INFO L226 Difference]: Without dead ends: 4967 [2023-12-24 13:01:26,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:01:26,823 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 180 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:01:26,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 792 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 13:01:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2023-12-24 13:01:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 3796. [2023-12-24 13:01:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 3614 states have (on average 1.2567791920309905) internal successors, (4542), 3623 states have internal predecessors, (4542), 111 states have call successors, (111), 70 states have call predecessors, (111), 70 states have return successors, (111), 102 states have call predecessors, (111), 111 states have call successors, (111) [2023-12-24 13:01:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 4764 transitions. [2023-12-24 13:01:27,280 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 4764 transitions. Word has length 118 [2023-12-24 13:01:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:01:27,281 INFO L495 AbstractCegarLoop]: Abstraction has 3796 states and 4764 transitions. [2023-12-24 13:01:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:01:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 4764 transitions. [2023-12-24 13:01:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 13:01:27,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:01:27,282 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:27,289 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 (69)] Forceful destruction successful, exit code 0 [2023-12-24 13:01:27,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:01:27,489 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:01:27,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:01:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash -928994661, now seen corresponding path program 1 times [2023-12-24 13:01:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:01:27,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980725903] [2023-12-24 13:01:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:27,497 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 13:01:27,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:01:27,498 INFO L229 MonitoredProcess]: Starting monitored process 70 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 13:01:27,505 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 (70)] Waiting until timeout for monitored process [2023-12-24 13:01:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:27,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 13:01:27,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:27,868 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 13:01:27,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 13:01:27,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:27,948 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 30 treesize of output 14 [2023-12-24 13:01:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:01:28,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:01:28,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:01:28,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980725903] [2023-12-24 13:01:28,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980725903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:01:28,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:01:28,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:01:28,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100062548] [2023-12-24 13:01:28,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:01:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:01:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:01:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:01:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:01:28,071 INFO L87 Difference]: Start difference. First operand 3796 states and 4764 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:01:30,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:01:32,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:01:35,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:01:39,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:01:41,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 13:01:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:01:42,215 INFO L93 Difference]: Finished difference Result 9450 states and 11703 transitions. [2023-12-24 13:01:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:01:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2023-12-24 13:01:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:01:42,222 INFO L225 Difference]: With dead ends: 9450 [2023-12-24 13:01:42,222 INFO L226 Difference]: Without dead ends: 6411 [2023-12-24 13:01:42,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-24 13:01:42,224 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 249 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:01:42,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 653 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 412 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2023-12-24 13:01:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2023-12-24 13:01:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5443. [2023-12-24 13:01:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5147 states have (on average 1.2370312803574899) internal successors, (6367), 5165 states have internal predecessors, (6367), 182 states have call successors, (182), 113 states have call predecessors, (182), 113 states have return successors, (182), 164 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-24 13:01:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 6731 transitions. [2023-12-24 13:01:42,943 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 6731 transitions. Word has length 118 [2023-12-24 13:01:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:01:42,943 INFO L495 AbstractCegarLoop]: Abstraction has 5443 states and 6731 transitions. [2023-12-24 13:01:42,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:01:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 6731 transitions. [2023-12-24 13:01:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 13:01:42,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:01:42,946 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:42,952 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 (70)] Ended with exit code 0 [2023-12-24 13:01:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:01:43,153 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:01:43,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:01:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 457208733, now seen corresponding path program 1 times [2023-12-24 13:01:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:01:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250442269] [2023-12-24 13:01:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:43,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:01:43,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:01:43,154 INFO L229 MonitoredProcess]: Starting monitored process 71 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 13:01:43,156 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 (71)] Waiting until timeout for monitored process [2023-12-24 13:01:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:43,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:01:43,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:43,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:01:43,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 13:01:43,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:43,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 13:01:43,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:43,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2023-12-24 13:01:44,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:44,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 61 [2023-12-24 13:01:44,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:44,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 46 [2023-12-24 13:01:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 18 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-24 13:01:44,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:01:45,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:01:45,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250442269] [2023-12-24 13:01:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250442269] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:01:45,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1720829489] [2023-12-24 13:01:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:01:45,555 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:01:45,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:01:45,556 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:01:45,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2023-12-24 13:01:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:01:46,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 13:01:46,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:01:46,315 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 13:01:46,493 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 13:01:46,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:46,913 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 1 case distinctions, treesize of input 39 treesize of output 37 [2023-12-24 13:01:47,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:47,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 71 [2023-12-24 13:01:48,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:48,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 88 [2023-12-24 13:01:49,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:01:49,603 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 124 treesize of output 68 [2023-12-24 13:01:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 151 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-24 13:01:49,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:01:50,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1720829489] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:01:50,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:01:50,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2023-12-24 13:01:50,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196819091] [2023-12-24 13:01:50,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:01:50,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 13:01:50,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:01:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 13:01:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=2504, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 13:01:50,978 INFO L87 Difference]: Start difference. First operand 5443 states and 6731 transitions. Second operand has 40 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 9 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2023-12-24 13:02:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:02:01,689 INFO L93 Difference]: Finished difference Result 11565 states and 14020 transitions. [2023-12-24 13:02:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-24 13:02:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 9 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) Word has length 118 [2023-12-24 13:02:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:02:01,697 INFO L225 Difference]: With dead ends: 11565 [2023-12-24 13:02:01,697 INFO L226 Difference]: Without dead ends: 6997 [2023-12-24 13:02:01,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 261 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1846, Invalid=7274, Unknown=0, NotChecked=0, Total=9120 [2023-12-24 13:02:01,701 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 890 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:02:01,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 3146 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-24 13:02:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2023-12-24 13:02:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 5265. [2023-12-24 13:02:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 4969 states have (on average 1.2330448782451198) internal successors, (6127), 4987 states have internal predecessors, (6127), 182 states have call successors, (182), 113 states have call predecessors, (182), 113 states have return successors, (182), 164 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-24 13:02:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 6491 transitions. [2023-12-24 13:02:02,468 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 6491 transitions. Word has length 118 [2023-12-24 13:02:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:02:02,468 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 6491 transitions. [2023-12-24 13:02:02,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 9 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (24), 7 states have call predecessors, (24), 9 states have call successors, (24) [2023-12-24 13:02:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 6491 transitions. [2023-12-24 13:02:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-24 13:02:02,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:02:02,470 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:02,477 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 (71)] Ended with exit code 0 [2023-12-24 13:02:02,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:02,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:02:02,877 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:02:02,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:02:02,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1296002193, now seen corresponding path program 1 times [2023-12-24 13:02:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:02:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382134494] [2023-12-24 13:02:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:02,878 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 13:02:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:02:02,879 INFO L229 MonitoredProcess]: Starting monitored process 73 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 13:02:02,881 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 (73)] Waiting until timeout for monitored process [2023-12-24 13:02:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:03,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:02:03,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:03,247 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 13:02:03,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 30 [2023-12-24 13:02:03,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 63 [2023-12-24 13:02:03,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:03,894 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 192 treesize of output 78 [2023-12-24 13:02:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 13:02:03,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:04,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:02:04,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382134494] [2023-12-24 13:02:04,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382134494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:04,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1431651801] [2023-12-24 13:02:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:04,190 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:02:04,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:02:04,191 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:02:04,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2023-12-24 13:02:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:05,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 13:02:05,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:05,178 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 13:02:05,928 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 62 treesize of output 30 [2023-12-24 13:02:06,410 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 101 treesize of output 57 [2023-12-24 13:02:06,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:06,654 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 174 treesize of output 78 [2023-12-24 13:02:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 13:02:06,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:06,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1431651801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:06,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:02:06,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 25 [2023-12-24 13:02:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621690693] [2023-12-24 13:02:06,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:02:06,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 13:02:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:02:06,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 13:02:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2023-12-24 13:02:06,795 INFO L87 Difference]: Start difference. First operand 5265 states and 6491 transitions. Second operand has 26 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 13:02:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:02:12,153 INFO L93 Difference]: Finished difference Result 7855 states and 9589 transitions. [2023-12-24 13:02:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 13:02:12,154 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 118 [2023-12-24 13:02:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:02:12,161 INFO L225 Difference]: With dead ends: 7855 [2023-12-24 13:02:12,161 INFO L226 Difference]: Without dead ends: 7853 [2023-12-24 13:02:12,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=466, Invalid=2186, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 13:02:12,162 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 635 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:02:12,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1601 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 13:02:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7853 states. [2023-12-24 13:02:12,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7853 to 3894. [2023-12-24 13:02:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3686 states have (on average 1.2251763429191536) internal successors, (4516), 3706 states have internal predecessors, (4516), 129 states have call successors, (129), 78 states have call predecessors, (129), 78 states have return successors, (129), 109 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 13:02:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 4774 transitions. [2023-12-24 13:02:12,760 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 4774 transitions. Word has length 118 [2023-12-24 13:02:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:02:12,760 INFO L495 AbstractCegarLoop]: Abstraction has 3894 states and 4774 transitions. [2023-12-24 13:02:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 6 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 13:02:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 4774 transitions. [2023-12-24 13:02:12,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-24 13:02:12,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:02:12,762 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:12,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (74)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:12,976 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 (73)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:13,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:02:13,169 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:02:13,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:02:13,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1987952501, now seen corresponding path program 1 times [2023-12-24 13:02:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:02:13,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850188917] [2023-12-24 13:02:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:13,169 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 13:02:13,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:02:13,171 INFO L229 MonitoredProcess]: Starting monitored process 75 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 13:02:13,171 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 (75)] Waiting until timeout for monitored process [2023-12-24 13:02:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:13,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:02:13,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:13,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:13,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 48 [2023-12-24 13:02:13,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:13,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 28 [2023-12-24 13:02:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 13:02:13,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:02:13,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:02:13,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850188917] [2023-12-24 13:02:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850188917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:02:13,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:02:13,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 13:02:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617396201] [2023-12-24 13:02:13,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:02:13,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:02:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:02:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:02:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:02:13,650 INFO L87 Difference]: Start difference. First operand 3894 states and 4774 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:02:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:02:16,775 INFO L93 Difference]: Finished difference Result 7714 states and 9378 transitions. [2023-12-24 13:02:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:02:16,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 119 [2023-12-24 13:02:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:02:16,779 INFO L225 Difference]: With dead ends: 7714 [2023-12-24 13:02:16,779 INFO L226 Difference]: Without dead ends: 4320 [2023-12-24 13:02:16,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-24 13:02:16,780 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 166 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:02:16,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 948 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 13:02:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2023-12-24 13:02:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 3666. [2023-12-24 13:02:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3458 states have (on average 1.2238288027761712) internal successors, (4232), 3478 states have internal predecessors, (4232), 129 states have call successors, (129), 78 states have call predecessors, (129), 78 states have return successors, (129), 109 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 13:02:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4490 transitions. [2023-12-24 13:02:17,367 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4490 transitions. Word has length 119 [2023-12-24 13:02:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:02:17,367 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 4490 transitions. [2023-12-24 13:02:17,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:02:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4490 transitions. [2023-12-24 13:02:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-24 13:02:17,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:02:17,370 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:02:17,395 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 (75)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:02:17,577 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:02:17,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:02:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1114345218, now seen corresponding path program 1 times [2023-12-24 13:02:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:02:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181987483] [2023-12-24 13:02:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:17,577 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 13:02:17,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:02:17,578 INFO L229 MonitoredProcess]: Starting monitored process 76 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 13:02:17,580 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 (76)] Waiting until timeout for monitored process [2023-12-24 13:02:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:17,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 13:02:17,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2023-12-24 13:02:18,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:02:18,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:02:18,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181987483] [2023-12-24 13:02:18,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181987483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:02:18,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:02:18,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 13:02:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540421413] [2023-12-24 13:02:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:02:18,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 13:02:18,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:02:18,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 13:02:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:02:18,114 INFO L87 Difference]: Start difference. First operand 3666 states and 4490 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:02:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:02:18,826 INFO L93 Difference]: Finished difference Result 6281 states and 7592 transitions. [2023-12-24 13:02:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 13:02:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 203 [2023-12-24 13:02:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:02:18,833 INFO L225 Difference]: With dead ends: 6281 [2023-12-24 13:02:18,833 INFO L226 Difference]: Without dead ends: 3115 [2023-12-24 13:02:18,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 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 13:02:18,836 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 53 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:02:18,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 280 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:02:18,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2023-12-24 13:02:19,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 2906. [2023-12-24 13:02:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2698 states have (on average 1.17531504818384) internal successors, (3171), 2718 states have internal predecessors, (3171), 129 states have call successors, (129), 78 states have call predecessors, (129), 78 states have return successors, (129), 109 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 13:02:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 3429 transitions. [2023-12-24 13:02:19,436 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 3429 transitions. Word has length 203 [2023-12-24 13:02:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:02:19,437 INFO L495 AbstractCegarLoop]: Abstraction has 2906 states and 3429 transitions. [2023-12-24 13:02:19,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 13:02:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 3429 transitions. [2023-12-24 13:02:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-24 13:02:19,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:02:19,440 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:02:19,447 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 (76)] Ended with exit code 0 [2023-12-24 13:02:19,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:02:19,648 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:02:19,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:02:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1750725477, now seen corresponding path program 1 times [2023-12-24 13:02:19,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:02:19,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697581810] [2023-12-24 13:02:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:19,649 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 13:02:19,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:02:19,650 INFO L229 MonitoredProcess]: Starting monitored process 77 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 13:02:19,683 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 (77)] Waiting until timeout for monitored process [2023-12-24 13:02:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:20,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 13:02:20,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:20,183 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 13:02:20,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 13:02:20,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:20,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 13:02:20,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:20,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2023-12-24 13:02:20,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:20,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2023-12-24 13:02:22,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:22,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 55 [2023-12-24 13:02:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 536 proven. 257 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-12-24 13:02:23,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:32,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:02:32,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697581810] [2023-12-24 13:02:32,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697581810] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:32,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1609140598] [2023-12-24 13:02:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:32,668 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:02:32,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:02:32,669 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:02:32,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (78)] Waiting until timeout for monitored process [2023-12-24 13:02:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:33,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 13:02:33,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:35,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:35,876 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 1 case distinctions, treesize of input 40 treesize of output 38 [2023-12-24 13:02:36,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:36,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 41 [2023-12-24 13:02:36,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:36,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 49 [2023-12-24 13:02:36,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:36,813 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 53 [2023-12-24 13:02:37,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:37,384 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 46 treesize of output 26 [2023-12-24 13:02:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 752 proven. 80 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-12-24 13:02:37,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:39,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:39,611 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 47 treesize of output 1 [2023-12-24 13:02:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-24 13:02:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1609140598] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:39,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:02:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [23, 12] total 41 [2023-12-24 13:02:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657354360] [2023-12-24 13:02:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:02:39,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:02:39,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:02:39,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:02:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2425, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 13:02:39,634 INFO L87 Difference]: Start difference. First operand 2906 states and 3429 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-24 13:02:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:02:42,900 INFO L93 Difference]: Finished difference Result 6792 states and 7860 transitions. [2023-12-24 13:02:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 13:02:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 212 [2023-12-24 13:02:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:02:42,904 INFO L225 Difference]: With dead ends: 6792 [2023-12-24 13:02:42,904 INFO L226 Difference]: Without dead ends: 4386 [2023-12-24 13:02:42,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=403, Invalid=2903, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 13:02:42,906 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 264 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:02:42,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 635 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 13:02:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2023-12-24 13:02:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 2914. [2023-12-24 13:02:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2706 states have (on average 1.1747967479674797) internal successors, (3179), 2726 states have internal predecessors, (3179), 129 states have call successors, (129), 78 states have call predecessors, (129), 78 states have return successors, (129), 109 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 13:02:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 3437 transitions. [2023-12-24 13:02:43,467 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 3437 transitions. Word has length 212 [2023-12-24 13:02:43,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:02:43,467 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 3437 transitions. [2023-12-24 13:02:43,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-24 13:02:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 3437 transitions. [2023-12-24 13:02:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-24 13:02:43,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:02:43,470 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:02:43,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (78)] Ended with exit code 0 [2023-12-24 13:02:43,688 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 (77)] Ended with exit code 0 [2023-12-24 13:02:43,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:02:43,880 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:02:43,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:02:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash 581447741, now seen corresponding path program 1 times [2023-12-24 13:02:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:02:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428351143] [2023-12-24 13:02:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:43,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:02:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:02:43,882 INFO L229 MonitoredProcess]: Starting monitored process 79 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 13:02:43,883 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 (79)] Waiting until timeout for monitored process [2023-12-24 13:02:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:44,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 13:02:44,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:44,508 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 14 treesize of output 10 [2023-12-24 13:02:44,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:02:44,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:44,719 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 55 treesize of output 25 [2023-12-24 13:02:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 348 proven. 9 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2023-12-24 13:02:44,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:44,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:02:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428351143] [2023-12-24 13:02:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428351143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2031240772] [2023-12-24 13:02:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:44,926 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:02:44,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:02:44,927 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:02:44,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2023-12-24 13:02:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:46,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 13:02:46,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:46,282 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 13:02:46,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:02:46,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 13:02:46,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:46,481 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 1 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 13:02:46,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:46,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 47 [2023-12-24 13:02:46,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:46,817 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 43 treesize of output 23 [2023-12-24 13:02:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2023-12-24 13:02:46,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:02:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2031240772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:02:46,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:02:46,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-12-24 13:02:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134353002] [2023-12-24 13:02:46,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:02:46,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:02:46,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:02:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:02:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-12-24 13:02:46,861 INFO L87 Difference]: Start difference. First operand 2914 states and 3437 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 13:02:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:02:48,898 INFO L93 Difference]: Finished difference Result 5645 states and 6650 transitions. [2023-12-24 13:02:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:02:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 216 [2023-12-24 13:02:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:02:48,902 INFO L225 Difference]: With dead ends: 5645 [2023-12-24 13:02:48,902 INFO L226 Difference]: Without dead ends: 3231 [2023-12-24 13:02:48,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-12-24 13:02:48,904 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 298 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:02:48,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 455 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 13:02:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2023-12-24 13:02:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3081. [2023-12-24 13:02:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 2830 states have (on average 1.1628975265017667) internal successors, (3291), 2852 states have internal predecessors, (3291), 155 states have call successors, (155), 95 states have call predecessors, (155), 95 states have return successors, (155), 133 states have call predecessors, (155), 155 states have call successors, (155) [2023-12-24 13:02:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 3601 transitions. [2023-12-24 13:02:49,683 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 3601 transitions. Word has length 216 [2023-12-24 13:02:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:02:49,683 INFO L495 AbstractCegarLoop]: Abstraction has 3081 states and 3601 transitions. [2023-12-24 13:02:49,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 13:02:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 3601 transitions. [2023-12-24 13:02:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-24 13:02:49,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:02:49,686 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:02:49,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (80)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:49,903 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 (79)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:02:50,095 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:02:50,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:02:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash 188420731, now seen corresponding path program 1 times [2023-12-24 13:02:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:02:50,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080564716] [2023-12-24 13:02:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:50,096 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 13:02:50,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:02:50,097 INFO L229 MonitoredProcess]: Starting monitored process 81 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 13:02:50,099 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 (81)] Waiting until timeout for monitored process [2023-12-24 13:02:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:50,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 13:02:50,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:50,753 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 14 treesize of output 10 [2023-12-24 13:02:50,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:02:50,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:50,944 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 55 treesize of output 25 [2023-12-24 13:02:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 348 proven. 9 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2023-12-24 13:02:50,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:51,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:02:51,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080564716] [2023-12-24 13:02:51,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080564716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:51,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1952261476] [2023-12-24 13:02:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:51,113 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:02:51,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:02:51,114 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:02:51,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2023-12-24 13:02:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:52,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 13:02:52,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:52,458 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 13:02:52,666 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 13:02:52,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:52,841 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 45 treesize of output 25 [2023-12-24 13:02:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 348 proven. 9 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2023-12-24 13:02:52,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:52,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1952261476] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:52,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:02:52,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-24 13:02:52,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560911199] [2023-12-24 13:02:52,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:02:52,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 13:02:52,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:02:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 13:02:52,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-12-24 13:02:52,924 INFO L87 Difference]: Start difference. First operand 3081 states and 3601 transitions. Second operand has 16 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 6 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-24 13:02:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:02:54,623 INFO L93 Difference]: Finished difference Result 5540 states and 6438 transitions. [2023-12-24 13:02:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 13:02:54,624 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 6 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) Word has length 216 [2023-12-24 13:02:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:02:54,626 INFO L225 Difference]: With dead ends: 5540 [2023-12-24 13:02:54,626 INFO L226 Difference]: Without dead ends: 2959 [2023-12-24 13:02:54,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-12-24 13:02:54,629 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 111 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:02:54,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 348 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 13:02:54,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2023-12-24 13:02:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2865. [2023-12-24 13:02:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2614 states have (on average 1.1541698546289212) internal successors, (3017), 2636 states have internal predecessors, (3017), 155 states have call successors, (155), 95 states have call predecessors, (155), 95 states have return successors, (155), 133 states have call predecessors, (155), 155 states have call successors, (155) [2023-12-24 13:02:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 3327 transitions. [2023-12-24 13:02:55,358 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 3327 transitions. Word has length 216 [2023-12-24 13:02:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:02:55,358 INFO L495 AbstractCegarLoop]: Abstraction has 2865 states and 3327 transitions. [2023-12-24 13:02:55,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 6 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 4 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-24 13:02:55,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 3327 transitions. [2023-12-24 13:02:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-24 13:02:55,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:02:55,362 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:02:55,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (82)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:55,580 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 (81)] Forceful destruction successful, exit code 0 [2023-12-24 13:02:55,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 13:02:55,780 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:02:55,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:02:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1145096430, now seen corresponding path program 1 times [2023-12-24 13:02:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:02:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947840496] [2023-12-24 13:02:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:55,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:02:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:02:55,782 INFO L229 MonitoredProcess]: Starting monitored process 83 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 13:02:55,810 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 (83)] Waiting until timeout for monitored process [2023-12-24 13:02:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:56,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:02:56,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:56,389 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 14 treesize of output 10 [2023-12-24 13:02:56,475 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 36 treesize of output 29 [2023-12-24 13:02:56,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:56,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2023-12-24 13:02:57,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:57,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 60 [2023-12-24 13:02:57,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:02:57,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 40 [2023-12-24 13:02:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 490 proven. 18 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-12-24 13:02:57,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:02:58,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:02:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947840496] [2023-12-24 13:02:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947840496] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:02:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [959072249] [2023-12-24 13:02:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:02:58,169 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:02:58,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:02:58,171 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:02:58,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (84)] Waiting until timeout for monitored process [2023-12-24 13:02:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:02:59,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 13:02:59,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:02:59,543 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 13:02:59,869 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 13:03:00,019 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 13:03:00,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:03:00,236 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 44 treesize of output 24 [2023-12-24 13:03:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 348 proven. 9 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2023-12-24 13:03:00,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:03:00,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [959072249] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:03:00,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:03:00,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 28 [2023-12-24 13:03:00,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559188100] [2023-12-24 13:03:00,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:03:00,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 13:03:00,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:03:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 13:03:00,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 13:03:00,567 INFO L87 Difference]: Start difference. First operand 2865 states and 3327 transitions. Second operand has 28 states, 25 states have (on average 7.28) internal successors, (182), 25 states have internal predecessors, (182), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 13:03:07,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:03:07,875 INFO L93 Difference]: Finished difference Result 5762 states and 6615 transitions. [2023-12-24 13:03:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 13:03:07,876 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 7.28) internal successors, (182), 25 states have internal predecessors, (182), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) Word has length 217 [2023-12-24 13:03:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:03:07,876 INFO L225 Difference]: With dead ends: 5762 [2023-12-24 13:03:07,876 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 13:03:07,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 462 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1104, Invalid=5058, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 13:03:07,887 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 713 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:03:07,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1827 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-24 13:03:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 13:03:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 13:03:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 13:03:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 13:03:07,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2023-12-24 13:03:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:03:07,887 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 13:03:07,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 7.28) internal successors, (182), 25 states have internal predecessors, (182), 8 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (34), 6 states have call predecessors, (34), 8 states have call successors, (34) [2023-12-24 13:03:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 13:03:07,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 13:03:07,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 13:03:07,898 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 (83)] Ended with exit code 0 [2023-12-24 13:03:08,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (84)] Forceful destruction successful, exit code 0 [2023-12-24 13:03:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:03:08,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 13:12:19,694 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 13:12:19,696 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-27-89-8-14-6-14-6-14-6-14-6-45-6-45-6-45-6-45-6-45-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-22-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-15-7-15-7-15-6-11-2-9-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-149-89-8-14-7-17-7-16-7-33-7-45-7-45-7-45-7-45-7-45-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-22-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-15-7-15-7-15-6-11-2-9-1 context. [2023-12-24 13:12:19,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 13:12:19,764 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 13:12:19,765 INFO L158 Benchmark]: Toolchain (without parser) took 873880.12ms. Allocated memory was 262.1MB in the beginning and 1.0GB in the end (delta: 748.7MB). Free memory was 213.1MB in the beginning and 614.5MB in the end (delta: -401.4MB). Peak memory consumption was 348.3MB. Max. memory is 8.0GB. [2023-12-24 13:12:19,766 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 177.2MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 13:12:19,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.16ms. Allocated memory is still 262.1MB. Free memory was 212.6MB in the beginning and 195.7MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 13:12:19,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.45ms. Allocated memory is still 262.1MB. Free memory was 195.7MB in the beginning and 192.1MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 13:12:19,766 INFO L158 Benchmark]: Boogie Preprocessor took 60.03ms. Allocated memory is still 262.1MB. Free memory was 192.1MB in the beginning and 186.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 13:12:19,766 INFO L158 Benchmark]: RCFGBuilder took 793.90ms. Allocated memory is still 262.1MB. Free memory was 186.4MB in the beginning and 220.5MB in the end (delta: -34.1MB). Peak memory consumption was 40.8MB. Max. memory is 8.0GB. [2023-12-24 13:12:19,766 INFO L158 Benchmark]: TraceAbstraction took 872733.25ms. Allocated memory was 262.1MB in the beginning and 1.0GB in the end (delta: 748.7MB). Free memory was 219.4MB in the beginning and 614.5MB in the end (delta: -395.1MB). Peak memory consumption was 353.6MB. Max. memory is 8.0GB. [2023-12-24 13:12:19,766 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 177.2MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.16ms. Allocated memory is still 262.1MB. Free memory was 212.6MB in the beginning and 195.7MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.45ms. Allocated memory is still 262.1MB. Free memory was 195.7MB in the beginning and 192.1MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.03ms. Allocated memory is still 262.1MB. Free memory was 192.1MB in the beginning and 186.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 793.90ms. Allocated memory is still 262.1MB. Free memory was 186.4MB in the beginning and 220.5MB in the end (delta: -34.1MB). Peak memory consumption was 40.8MB. Max. memory is 8.0GB. * TraceAbstraction took 872733.25ms. Allocated memory was 262.1MB in the beginning and 1.0GB in the end (delta: 748.7MB). Free memory was 219.4MB in the beginning and 614.5MB in the end (delta: -395.1MB). Peak memory consumption was 353.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-27-89-8-14-6-14-6-14-6-14-6-45-6-45-6-45-6-45-6-45-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-33-7-22-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-15-7-15-7-15-6-11-2-9-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-39-89-8-14-10-14-10-14-11-14-11-45-11-45-15-45-15-45-15-45-33-33-33-33-33-33-33-33-33-33-33-33-22-33-17-33-17-33-17-22-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-15-17-15-17-15-17-11-15-9-15-7-15-6-11-2-9-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown