/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-sp_file-86.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 20:27:52,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 20:27:52,754 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 20:27:52,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 20:27:52,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 20:27:52,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 20:27:52,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 20:27:52,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 20:27:52,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 20:27:52,773 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 20:27:52,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 20:27:52,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 20:27:52,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 20:27:52,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 20:27:52,774 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 20:27:52,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 20:27:52,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 20:27:52,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 20:27:52,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 20:27:52,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 20:27:52,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 20:27:52,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 20:27:52,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 20:27:52,776 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 20:27:52,776 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 20:27:52,776 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 20:27:52,777 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 20:27:52,777 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 20:27:52,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 20:27:52,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 20:27:52,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 20:27:52,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 20:27:52,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 20:27:52,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 20:27:52,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 20:27:52,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 20:27:52,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 20:27:52,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 20:27:52,779 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 20:27:52,779 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 20:27:52,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 20:27:52,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 20:27:52,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 20:27:52,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 20:27:52,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 20:27:52,780 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 20:27:52,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 20:27:52,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 20:27:52,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 20:27:52,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 20:27:52,970 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 20:27:52,971 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 20:27:52,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-86.i [2023-12-24 20:27:54,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 20:27:54,247 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 20:27:54,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-86.i [2023-12-24 20:27:54,260 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c1a5c02/3a006b9862fe41168b47b4dd81ea1842/FLAGf8c8d87c1 [2023-12-24 20:27:54,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c1a5c02/3a006b9862fe41168b47b4dd81ea1842 [2023-12-24 20:27:54,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 20:27:54,283 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 20:27:54,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 20:27:54,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 20:27:54,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 20:27:54,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69425cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54, skipping insertion in model container [2023-12-24 20:27:54,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 20:27:54,451 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-sp_file-86.i[917,930] [2023-12-24 20:27:54,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 20:27:54,559 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 20:27:54,567 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-sp_file-86.i[917,930] [2023-12-24 20:27:54,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 20:27:54,616 INFO L206 MainTranslator]: Completed translation [2023-12-24 20:27:54,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54 WrapperNode [2023-12-24 20:27:54,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 20:27:54,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 20:27:54,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 20:27:54,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 20:27:54,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,665 INFO L138 Inliner]: procedures = 36, calls = 243, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 762 [2023-12-24 20:27:54,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 20:27:54,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 20:27:54,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 20:27:54,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 20:27:54,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,706 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 20 initializations are split as follows [2, 18]. The 21 writes are split as follows [0, 21]. [2023-12-24 20:27:54,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 20:27:54,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 20:27:54,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 20:27:54,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 20:27:54,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (1/1) ... [2023-12-24 20:27:54,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 20:27:54,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 20:27:54,806 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 20:27:54,827 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 20:27:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 20:27:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 20:27:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 20:27:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 20:27:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 20:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 20:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 20:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 20:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 20:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 20:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 20:27:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 20:27:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 20:27:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 20:27:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 20:27:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 20:27:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 20:27:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 20:27:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 20:27:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 20:27:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 20:27:54,973 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 20:27:54,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 20:27:55,695 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 20:27:55,721 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 20:27:55,721 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 20:27:55,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 08:27:55 BoogieIcfgContainer [2023-12-24 20:27:55,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 20:27:55,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 20:27:55,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 20:27:55,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 20:27:55,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 08:27:54" (1/3) ... [2023-12-24 20:27:55,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b93262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 08:27:55, skipping insertion in model container [2023-12-24 20:27:55,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 08:27:54" (2/3) ... [2023-12-24 20:27:55,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b93262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 08:27:55, skipping insertion in model container [2023-12-24 20:27:55,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 08:27:55" (3/3) ... [2023-12-24 20:27:55,728 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-86.i [2023-12-24 20:27:55,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 20:27:55,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 20:27:55,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 20:27:55,776 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;@7d5c258, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 20:27:55,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 20:27:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:27:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-24 20:27:55,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:27:55,790 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:55,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:27:55,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:27:55,794 INFO L85 PathProgramCache]: Analyzing trace with hash -336453801, now seen corresponding path program 1 times [2023-12-24 20:27:55,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:27:55,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64235238] [2023-12-24 20:27:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:27:55,805 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 20:27:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:27:55,812 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 20:27:55,840 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 20:27:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:27:56,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 20:27:56,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:27:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-12-24 20:27:56,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 20:27:56,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:27:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64235238] [2023-12-24 20:27:56,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64235238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 20:27:56,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 20:27:56,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 20:27:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598473449] [2023-12-24 20:27:56,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 20:27:56,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 20:27:56,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:27:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 20:27:56,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 20:27:56,238 INFO L87 Difference]: Start difference. First operand has 148 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:27:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:27:56,320 INFO L93 Difference]: Finished difference Result 293 states and 473 transitions. [2023-12-24 20:27:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 20:27:56,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 179 [2023-12-24 20:27:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:27:56,334 INFO L225 Difference]: With dead ends: 293 [2023-12-24 20:27:56,334 INFO L226 Difference]: Without dead ends: 146 [2023-12-24 20:27:56,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 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 20:27:56,343 INFO L413 NwaCegarLoop]: 216 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, 216 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 20:27:56,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 20:27:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-24 20:27:56,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-24 20:27:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 119 states have (on average 1.4285714285714286) internal successors, (170), 119 states have internal predecessors, (170), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:27:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 220 transitions. [2023-12-24 20:27:56,401 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 220 transitions. Word has length 179 [2023-12-24 20:27:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:27:56,401 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 220 transitions. [2023-12-24 20:27:56,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:27:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 220 transitions. [2023-12-24 20:27:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-24 20:27:56,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:27:56,410 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:56,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 20:27:56,620 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 20:27:56,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:27:56,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:27:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash -249056431, now seen corresponding path program 1 times [2023-12-24 20:27:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:27:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261125050] [2023-12-24 20:27:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:27:56,623 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 20:27:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:27:56,630 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 20:27:56,632 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 20:27:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:27:56,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 20:27:57,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:27:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-12-24 20:27:57,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 20:27:57,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:27:57,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261125050] [2023-12-24 20:27:57,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261125050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 20:27:57,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 20:27:57,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 20:27:57,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352510462] [2023-12-24 20:27:57,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 20:27:57,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 20:27:57,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:27:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 20:27:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 20:27:57,061 INFO L87 Difference]: Start difference. First operand 146 states and 220 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:27:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:27:57,127 INFO L93 Difference]: Finished difference Result 297 states and 448 transitions. [2023-12-24 20:27:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 20:27:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 179 [2023-12-24 20:27:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:27:57,129 INFO L225 Difference]: With dead ends: 297 [2023-12-24 20:27:57,129 INFO L226 Difference]: Without dead ends: 152 [2023-12-24 20:27:57,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 20:27:57,131 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 10 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 20:27:57,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 640 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 20:27:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-24 20:27:57,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2023-12-24 20:27:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 121 states have (on average 1.421487603305785) internal successors, (172), 121 states have internal predecessors, (172), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:27:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 222 transitions. [2023-12-24 20:27:57,139 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 222 transitions. Word has length 179 [2023-12-24 20:27:57,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:27:57,140 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 222 transitions. [2023-12-24 20:27:57,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:27:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 222 transitions. [2023-12-24 20:27:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-24 20:27:57,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:27:57,142 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:57,165 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 20:27:57,351 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 20:27:57,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:27:57,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:27:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1472946255, now seen corresponding path program 1 times [2023-12-24 20:27:57,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:27:57,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521534000] [2023-12-24 20:27:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:27:57,353 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 20:27:57,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:27:57,354 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 20:27:57,356 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 20:27:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:27:57,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 20:27:57,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:27:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 20:27:57,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 20:27:57,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:27:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521534000] [2023-12-24 20:27:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521534000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 20:27:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 20:27:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 20:27:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916874150] [2023-12-24 20:27:57,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 20:27:57,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 20:27:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:27:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 20:27:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 20:27:57,750 INFO L87 Difference]: Start difference. First operand 148 states and 222 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 20:27:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:27:57,827 INFO L93 Difference]: Finished difference Result 304 states and 455 transitions. [2023-12-24 20:27:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 20:27:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 179 [2023-12-24 20:27:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:27:57,829 INFO L225 Difference]: With dead ends: 304 [2023-12-24 20:27:57,829 INFO L226 Difference]: Without dead ends: 157 [2023-12-24 20:27:57,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 20:27:57,831 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 10 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 20:27:57,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 840 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 20:27:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-24 20:27:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2023-12-24 20:27:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 125 states have (on average 1.408) internal successors, (176), 125 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:27:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 226 transitions. [2023-12-24 20:27:57,838 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 226 transitions. Word has length 179 [2023-12-24 20:27:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:27:57,839 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 226 transitions. [2023-12-24 20:27:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 20:27:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 226 transitions. [2023-12-24 20:27:57,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-24 20:27:57,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:27:57,840 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:57,861 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 (4)] Forceful destruction successful, exit code 0 [2023-12-24 20:27:58,050 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 20:27:58,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:27:58,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:27:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1473005837, now seen corresponding path program 1 times [2023-12-24 20:27:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:27:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488978300] [2023-12-24 20:27:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:27:58,052 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 20:27:58,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:27:58,053 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 20:27:58,057 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 20:27:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:27:58,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 20:27:58,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:27:58,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 41 [2023-12-24 20:27:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-12-24 20:27:58,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 20:27:58,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:27:58,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488978300] [2023-12-24 20:27:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488978300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 20:27:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 20:27:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 20:27:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546052127] [2023-12-24 20:27:58,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 20:27:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 20:27:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:27:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 20:27:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 20:27:58,547 INFO L87 Difference]: Start difference. First operand 152 states and 226 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:27:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:27:59,940 INFO L93 Difference]: Finished difference Result 307 states and 457 transitions. [2023-12-24 20:27:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 20:27:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 179 [2023-12-24 20:27:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:27:59,942 INFO L225 Difference]: With dead ends: 307 [2023-12-24 20:27:59,942 INFO L226 Difference]: Without dead ends: 156 [2023-12-24 20:27:59,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 20:27:59,943 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 210 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 20:27:59,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 643 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 20:27:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-24 20:27:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-12-24 20:27:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 123 states have (on average 1.4065040650406504) internal successors, (173), 123 states have internal predecessors, (173), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:27:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 223 transitions. [2023-12-24 20:27:59,949 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 223 transitions. Word has length 179 [2023-12-24 20:27:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:27:59,950 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 223 transitions. [2023-12-24 20:27:59,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:27:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 223 transitions. [2023-12-24 20:27:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-24 20:27:59,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:27:59,951 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:59,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 20:28:00,160 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 20:28:00,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:28:00,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:28:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1569851349, now seen corresponding path program 1 times [2023-12-24 20:28:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:28:00,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155023678] [2023-12-24 20:28:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:28:00,162 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 20:28:00,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:28:00,163 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 20:28:00,183 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 20:28:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:28:00,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 20:28:00,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:28:00,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 40 [2023-12-24 20:28:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 616 proven. 40 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-24 20:28:00,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 20:28:00,971 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 58 treesize of output 22 [2023-12-24 20:28:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-24 20:28:00,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:28:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155023678] [2023-12-24 20:28:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155023678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 20:28:00,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 20:28:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 20:28:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400263596] [2023-12-24 20:28:00,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 20:28:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 20:28:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:28:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 20:28:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 20:28:00,993 INFO L87 Difference]: Start difference. First operand 150 states and 223 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (49), 3 states have call predecessors, (49), 4 states have return successors, (49), 3 states have call predecessors, (49), 4 states have call successors, (49) [2023-12-24 20:28:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:28:02,708 INFO L93 Difference]: Finished difference Result 312 states and 460 transitions. [2023-12-24 20:28:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 20:28:02,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (49), 3 states have call predecessors, (49), 4 states have return successors, (49), 3 states have call predecessors, (49), 4 states have call successors, (49) Word has length 181 [2023-12-24 20:28:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:28:02,712 INFO L225 Difference]: With dead ends: 312 [2023-12-24 20:28:02,712 INFO L226 Difference]: Without dead ends: 152 [2023-12-24 20:28:02,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 351 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 20:28:02,713 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 197 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 20:28:02,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 719 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 20:28:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-24 20:28:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2023-12-24 20:28:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 123 states have (on average 1.3902439024390243) internal successors, (171), 123 states have internal predecessors, (171), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:28:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 221 transitions. [2023-12-24 20:28:02,720 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 221 transitions. Word has length 181 [2023-12-24 20:28:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:28:02,720 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 221 transitions. [2023-12-24 20:28:02,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (49), 3 states have call predecessors, (49), 4 states have return successors, (49), 3 states have call predecessors, (49), 4 states have call successors, (49) [2023-12-24 20:28:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 221 transitions. [2023-12-24 20:28:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-24 20:28:02,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:28:02,721 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:02,739 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 (6)] Ended with exit code 0 [2023-12-24 20:28:02,931 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 20:28:02,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:28:02,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:28:02,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1442943661, now seen corresponding path program 1 times [2023-12-24 20:28:02,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:28:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697344612] [2023-12-24 20:28:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:28:02,932 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 20:28:02,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:28:02,933 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 20:28:02,935 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 20:28:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:28:03,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 20:28:03,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:28:03,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 41 [2023-12-24 20:28:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-12-24 20:28:03,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 20:28:03,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:28:03,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697344612] [2023-12-24 20:28:03,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697344612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 20:28:03,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 20:28:03,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 20:28:03,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836559351] [2023-12-24 20:28:03,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 20:28:03,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 20:28:03,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:28:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 20:28:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 20:28:03,455 INFO L87 Difference]: Start difference. First operand 150 states and 221 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:28:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:28:04,767 INFO L93 Difference]: Finished difference Result 305 states and 450 transitions. [2023-12-24 20:28:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 20:28:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 181 [2023-12-24 20:28:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:28:04,768 INFO L225 Difference]: With dead ends: 305 [2023-12-24 20:28:04,769 INFO L226 Difference]: Without dead ends: 156 [2023-12-24 20:28:04,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 20:28:04,770 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 188 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 20:28:04,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 635 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 20:28:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-24 20:28:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-12-24 20:28:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 123 states have (on average 1.3821138211382114) internal successors, (170), 123 states have internal predecessors, (170), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:28:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2023-12-24 20:28:04,776 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 181 [2023-12-24 20:28:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:28:04,777 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2023-12-24 20:28:04,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:28:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2023-12-24 20:28:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-24 20:28:04,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:28:04,778 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:04,788 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 20:28:04,987 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 20:28:04,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:28:04,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:28:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1852611891, now seen corresponding path program 1 times [2023-12-24 20:28:04,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:28:04,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918589819] [2023-12-24 20:28:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:28:04,989 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 20:28:04,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:28:04,990 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 20:28:04,991 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 20:28:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:28:05,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 20:28:05,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:28:05,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 41 [2023-12-24 20:28:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-24 20:28:05,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 20:28:05,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:28:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918589819] [2023-12-24 20:28:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918589819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 20:28:05,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 20:28:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 20:28:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65044500] [2023-12-24 20:28:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 20:28:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 20:28:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:28:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 20:28:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 20:28:05,536 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:28:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:28:06,714 INFO L93 Difference]: Finished difference Result 305 states and 448 transitions. [2023-12-24 20:28:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 20:28:06,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 183 [2023-12-24 20:28:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:28:06,716 INFO L225 Difference]: With dead ends: 305 [2023-12-24 20:28:06,716 INFO L226 Difference]: Without dead ends: 156 [2023-12-24 20:28:06,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 20:28:06,717 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 179 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 20:28:06,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 631 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 20:28:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-24 20:28:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-12-24 20:28:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 123 states have internal predecessors, (169), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:28:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 219 transitions. [2023-12-24 20:28:06,723 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 219 transitions. Word has length 183 [2023-12-24 20:28:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:28:06,723 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 219 transitions. [2023-12-24 20:28:06,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-24 20:28:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 219 transitions. [2023-12-24 20:28:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-24 20:28:06,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:28:06,725 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:06,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 20:28:06,925 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 20:28:06,925 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:28:06,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:28:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash 670947603, now seen corresponding path program 1 times [2023-12-24 20:28:06,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:28:06,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135775416] [2023-12-24 20:28:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:28:06,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 20:28:06,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:28:06,928 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 20:28:06,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 20:28:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:28:07,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 20:28:07,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:28:07,695 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 20:28:08,466 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 20:28:09,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 20:28:09,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-12-24 20:28:10,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 53 [2023-12-24 20:28:11,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 20:28:12,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 20:28:12,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 20:28:13,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2023-12-24 20:28:14,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 75 [2023-12-24 20:28:15,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 86 [2023-12-24 20:28:16,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 89 [2023-12-24 20:28:16,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 89 [2023-12-24 20:28:17,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 89 [2023-12-24 20:28:18,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 94 [2023-12-24 20:28:18,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 94 [2023-12-24 20:28:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 828 proven. 247 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-24 20:28:18,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 20:28:19,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:28:19,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135775416] [2023-12-24 20:28:19,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135775416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 20:28:19,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1197658400] [2023-12-24 20:28:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:28:19,307 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 20:28:19,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 20:28:19,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 20:28:19,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 20:28:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:28:20,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 20:28:20,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:28:22,106 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 24 treesize of output 12 [2023-12-24 20:28:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-24 20:28:22,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 20:28:22,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1197658400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 20:28:22,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 20:28:22,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [19] total 24 [2023-12-24 20:28:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032958150] [2023-12-24 20:28:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 20:28:22,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 20:28:22,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:28:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 20:28:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2023-12-24 20:28:22,205 INFO L87 Difference]: Start difference. First operand 150 states and 219 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 20:28:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:28:24,333 INFO L93 Difference]: Finished difference Result 406 states and 598 transitions. [2023-12-24 20:28:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 20:28:24,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 185 [2023-12-24 20:28:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:28:24,335 INFO L225 Difference]: With dead ends: 406 [2023-12-24 20:28:24,335 INFO L226 Difference]: Without dead ends: 257 [2023-12-24 20:28:24,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2023-12-24 20:28:24,336 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 447 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 20:28:24,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 505 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 20:28:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-24 20:28:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 170. [2023-12-24 20:28:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 143 states have (on average 1.3986013986013985) internal successors, (200), 143 states have internal predecessors, (200), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:28:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 250 transitions. [2023-12-24 20:28:24,354 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 250 transitions. Word has length 185 [2023-12-24 20:28:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:28:24,354 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 250 transitions. [2023-12-24 20:28:24,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-24 20:28:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 250 transitions. [2023-12-24 20:28:24,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-24 20:28:24,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:28:24,356 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:24,375 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 20:28:24,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 20:28:24,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 20:28:24,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:28:24,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:28:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1682064853, now seen corresponding path program 1 times [2023-12-24 20:28:24,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:28:24,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647601637] [2023-12-24 20:28:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:28:24,778 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 20:28:24,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:28:24,779 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 20:28:24,780 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 20:28:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:28:25,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 20:28:25,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:28:26,778 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 20:28:27,413 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 20:28:27,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 20:28:28,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 20:28:29,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 20:28:29,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 20:28:30,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 20:28:30,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-12-24 20:28:31,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-12-24 20:28:31,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2023-12-24 20:28:32,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-12-24 20:28:33,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 66 [2023-12-24 20:28:33,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 74 [2023-12-24 20:28:33,970 INFO L349 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2023-12-24 20:28:33,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 81 treesize of output 94 [2023-12-24 20:28:34,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 86 [2023-12-24 20:28:34,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 20:28:34,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 113 treesize of output 61 [2023-12-24 20:28:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 728 proven. 229 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-12-24 20:28:34,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 20:28:43,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:28:43,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647601637] [2023-12-24 20:28:43,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647601637] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 20:28:43,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1598620098] [2023-12-24 20:28:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:28:43,396 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 20:28:43,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 20:28:43,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 20:28:43,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 20:28:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:28:45,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 20:28:45,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:28:46,608 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 20:28:47,321 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 20:28:47,784 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 20:28:48,277 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 20:28:48,712 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 20:28:49,141 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 20:28:49,703 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 20:28:50,153 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 20:28:50,589 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 20:28:51,046 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 20:28:51,544 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 20:28:52,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-12-24 20:28:52,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2023-12-24 20:28:52,668 INFO L349 Elim1Store]: treesize reduction 55, result has 21.4 percent of original size [2023-12-24 20:28:52,668 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 4 case distinctions, treesize of input 57 treesize of output 65 [2023-12-24 20:28:52,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2023-12-24 20:28:53,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 49 [2023-12-24 20:28:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 456 proven. 229 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-12-24 20:28:53,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 20:29:44,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1598620098] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 20:29:44,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 20:29:44,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 28 [2023-12-24 20:29:44,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608612263] [2023-12-24 20:29:44,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 20:29:44,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 20:29:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:29:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 20:29:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1354, Unknown=14, NotChecked=0, Total=1560 [2023-12-24 20:29:44,135 INFO L87 Difference]: Start difference. First operand 170 states and 250 transitions. Second operand has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 27 states have internal predecessors, (141), 10 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (50), 9 states have call predecessors, (50), 10 states have call successors, (50) [2023-12-24 20:30:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:30:04,829 INFO L93 Difference]: Finished difference Result 667 states and 972 transitions. [2023-12-24 20:30:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-24 20:30:04,830 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 27 states have internal predecessors, (141), 10 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (50), 9 states have call predecessors, (50), 10 states have call successors, (50) Word has length 185 [2023-12-24 20:30:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:30:04,832 INFO L225 Difference]: With dead ends: 667 [2023-12-24 20:30:04,832 INFO L226 Difference]: Without dead ends: 498 [2023-12-24 20:30:04,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 67.4s TimeCoverageRelationStatistics Valid=1219, Invalid=4929, Unknown=14, NotChecked=0, Total=6162 [2023-12-24 20:30:04,834 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 4246 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-24 20:30:04,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4246 Valid, 914 Invalid, 3640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-24 20:30:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-24 20:30:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 298. [2023-12-24 20:30:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 260 states have (on average 1.4153846153846155) internal successors, (368), 261 states have internal predecessors, (368), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-24 20:30:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 430 transitions. [2023-12-24 20:30:04,860 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 430 transitions. Word has length 185 [2023-12-24 20:30:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:30:04,861 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 430 transitions. [2023-12-24 20:30:04,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 27 states have internal predecessors, (141), 10 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (50), 9 states have call predecessors, (50), 10 states have call successors, (50) [2023-12-24 20:30:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 430 transitions. [2023-12-24 20:30:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 20:30:04,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:30:04,862 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:04,874 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 20:30:05,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 20:30:05,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 20:30:05,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:30:05,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:30:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -233258024, now seen corresponding path program 1 times [2023-12-24 20:30:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:30:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199833807] [2023-12-24 20:30:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:30:05,288 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 20:30:05,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:30:05,289 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 20:30:05,289 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 20:30:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:30:05,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 20:30:05,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:30:05,969 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 20:30:06,870 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 20:30:07,397 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 20:30:08,125 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 20:30:08,834 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 30 treesize of output 25 [2023-12-24 20:30:09,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 20:30:10,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 20:30:10,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 20:30:11,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 20:30:11,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2023-12-24 20:30:12,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-12-24 20:30:13,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 58 [2023-12-24 20:30:14,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 20:30:15,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2023-12-24 20:30:16,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 72 [2023-12-24 20:30:16,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 72 [2023-12-24 20:30:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 796 proven. 247 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 20:30:17,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 20:30:17,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 20:30:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199833807] [2023-12-24 20:30:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199833807] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 20:30:17,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061545047] [2023-12-24 20:30:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:30:17,941 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 20:30:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 20:30:17,942 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 20:30:17,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 20:30:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 20:30:19,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-24 20:30:19,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 20:30:20,078 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 20:30:20,722 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 20:30:21,550 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 20:30:22,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 20:30:22,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 20:30:23,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 20:30:24,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 20:30:25,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 20:30:25,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 20:30:26,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 20:30:27,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 20:30:27,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-12-24 20:30:28,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 53 [2023-12-24 20:30:29,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2023-12-24 20:30:31,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 79 [2023-12-24 20:30:31,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 79 [2023-12-24 20:30:31,759 INFO L349 Elim1Store]: treesize reduction 103, result has 12.7 percent of original size [2023-12-24 20:30:31,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 75 treesize of output 103 [2023-12-24 20:30:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 752 proven. 184 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 20:30:32,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 20:31:38,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1061545047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 20:31:38,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 20:31:38,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 27 [2023-12-24 20:31:38,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483969315] [2023-12-24 20:31:38,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 20:31:38,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 20:31:38,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 20:31:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 20:31:38,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1349, Unknown=12, NotChecked=0, Total=1560 [2023-12-24 20:31:38,586 INFO L87 Difference]: Start difference. First operand 298 states and 430 transitions. Second operand has 28 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 27 states have internal predecessors, (155), 15 states have call successors, (50), 14 states have call predecessors, (50), 15 states have return successors, (50), 14 states have call predecessors, (50), 15 states have call successors, (50) [2023-12-24 20:31:55,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 20:32:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 20:32:00,277 INFO L93 Difference]: Finished difference Result 603 states and 851 transitions. [2023-12-24 20:32:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 20:32:00,278 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 27 states have internal predecessors, (155), 15 states have call successors, (50), 14 states have call predecessors, (50), 15 states have return successors, (50), 14 states have call predecessors, (50), 15 states have call successors, (50) Word has length 187 [2023-12-24 20:32:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 20:32:00,284 INFO L225 Difference]: With dead ends: 603 [2023-12-24 20:32:00,284 INFO L226 Difference]: Without dead ends: 306 [2023-12-24 20:32:00,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 375 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 75.7s TimeCoverageRelationStatistics Valid=653, Invalid=2875, Unknown=12, NotChecked=0, Total=3540 [2023-12-24 20:32:00,286 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2002 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-12-24 20:32:00,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2002 Valid, 488 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2023-12-24 20:32:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-24 20:32:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 230. [2023-12-24 20:32:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 196 states have (on average 1.3775510204081634) internal successors, (270), 196 states have internal predecessors, (270), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-24 20:32:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 320 transitions. [2023-12-24 20:32:00,320 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 320 transitions. Word has length 187 [2023-12-24 20:32:00,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 20:32:00,320 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 320 transitions. [2023-12-24 20:32:00,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.7407407407407405) internal successors, (155), 27 states have internal predecessors, (155), 15 states have call successors, (50), 14 states have call predecessors, (50), 15 states have return successors, (50), 14 states have call predecessors, (50), 15 states have call successors, (50) [2023-12-24 20:32:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 320 transitions. [2023-12-24 20:32:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-24 20:32:00,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 20:32:00,323 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:00,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-24 20:32:00,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 20:32:00,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 20:32:00,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 20:32:00,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 20:32:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1932773018, now seen corresponding path program 1 times [2023-12-24 20:32:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 20:32:00,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362721423] [2023-12-24 20:32:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 20:32:00,734 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 20:32:00,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 20:32:00,735 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 20:32:00,764 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 Received shutdown request... [2023-12-24 20:42:32,684 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 20:42:32,724 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 20:42:33,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-24 20:42:33,925 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Forcibly destroying the process [2023-12-24 20:42:33,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-24 20:42:33,964 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 20:42:33,964 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 20:42:33,964 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 188 with TraceHistMax 25,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1362721423] and IpTcStrategyModuleCvc4 [1604539547]. [2023-12-24 20:42:33,967 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 20:42:33,977 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 (15)] Forceful destruction successful, exit code 137 [2023-12-24 20:42:33,978 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 20:42:33,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 08:42:33 BoogieIcfgContainer [2023-12-24 20:42:33,980 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 20:42:33,996 INFO L158 Benchmark]: Toolchain (without parser) took 879697.63ms. Allocated memory was 245.4MB in the beginning and 570.4MB in the end (delta: 325.1MB). Free memory was 196.1MB in the beginning and 359.2MB in the end (delta: -163.1MB). Peak memory consumption was 163.3MB. Max. memory is 8.0GB. [2023-12-24 20:42:33,997 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 181.4MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 20:42:33,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.08ms. Allocated memory is still 245.4MB. Free memory was 195.8MB in the beginning and 175.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-24 20:42:33,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.64ms. Allocated memory is still 245.4MB. Free memory was 175.5MB in the beginning and 170.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 20:42:33,997 INFO L158 Benchmark]: Boogie Preprocessor took 86.23ms. Allocated memory is still 245.4MB. Free memory was 170.9MB in the beginning and 165.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 20:42:33,997 INFO L158 Benchmark]: RCFGBuilder took 968.67ms. Allocated memory is still 245.4MB. Free memory was 164.6MB in the beginning and 171.8MB in the end (delta: -7.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-24 20:42:33,998 INFO L158 Benchmark]: TraceAbstraction took 878257.11ms. Allocated memory was 245.4MB in the beginning and 570.4MB in the end (delta: 325.1MB). Free memory was 170.7MB in the beginning and 359.2MB in the end (delta: -188.5MB). Peak memory consumption was 137.1MB. Max. memory is 8.0GB. [2023-12-24 20:42:33,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 181.4MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 332.08ms. Allocated memory is still 245.4MB. Free memory was 195.8MB in the beginning and 175.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.64ms. Allocated memory is still 245.4MB. Free memory was 175.5MB in the beginning and 170.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 86.23ms. Allocated memory is still 245.4MB. Free memory was 170.9MB in the beginning and 165.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 968.67ms. Allocated memory is still 245.4MB. Free memory was 164.6MB in the beginning and 171.8MB in the end (delta: -7.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 878257.11ms. Allocated memory was 245.4MB in the beginning and 570.4MB in the end (delta: 325.1MB). Free memory was 170.7MB in the beginning and 359.2MB in the end (delta: -188.5MB). Peak memory consumption was 137.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 188 with TraceHistMax 25,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1362721423] and IpTcStrategyModuleCvc4 [1604539547]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 878.2s, OverallIterations: 11, TraceHistogramMax: 25, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 50.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7505 SdHoareTripleChecker+Valid, 37.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7489 mSDsluCounter, 6231 SdHoareTripleChecker+Invalid, 36.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4463 mSDsCounter, 687 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6589 IncrementalHoareTripleChecker+Invalid, 7276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 687 mSolverCounterUnsat, 1768 mSDtfsCounter, 6589 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2735 GetRequests, 2513 SyntacticMatches, 4 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2695 ImplicationChecksByTransitivity, 145.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=9, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 392 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 7.1s SatisfiabilityAnalysisTime, 182.5s InterpolantComputationTime, 2375 NumberOfCodeBlocks, 2375 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2542 ConstructedInterpolants, 644 QuantifiedInterpolants, 59028 SizeOfPredicates, 134 NumberOfNonLiveVariables, 5043 ConjunctsInSsa, 330 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 15582/16800 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown