/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-s_file-37.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 17:59:48,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 17:59:48,534 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 17:59:48,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 17:59:48,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 17:59:48,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 17:59:48,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 17:59:48,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 17:59:48,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 17:59:48,563 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 17:59:48,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 17:59:48,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 17:59:48,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 17:59:48,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 17:59:48,566 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 17:59:48,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 17:59:48,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 17:59:48,566 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 17:59:48,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 17:59:48,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 17:59:48,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 17:59:48,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 17:59:48,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 17:59:48,567 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 17:59:48,568 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 17:59:48,568 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 17:59:48,568 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 17:59:48,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 17:59:48,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 17:59:48,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 17:59:48,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 17:59:48,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 17:59:48,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 17:59:48,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 17:59:48,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:59:48,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 17:59:48,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 17:59:48,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 17:59:48,571 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 17:59:48,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 17:59:48,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 17:59:48,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 17:59:48,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 17:59:48,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 17:59:48,719 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 17:59:48,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-37.i [2023-12-24 17:59:49,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 17:59:49,816 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 17:59:49,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-37.i [2023-12-24 17:59:49,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6629b99/ab10388dc678407686d4249c84e1cdc5/FLAG051fc7071 [2023-12-24 17:59:49,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6629b99/ab10388dc678407686d4249c84e1cdc5 [2023-12-24 17:59:49,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 17:59:49,835 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 17:59:49,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 17:59:49,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 17:59:49,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 17:59:49,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:59:49" (1/1) ... [2023-12-24 17:59:49,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a6ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:49, skipping insertion in model container [2023-12-24 17:59:49,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:59:49" (1/1) ... [2023-12-24 17:59:49,863 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 17:59:49,987 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-s_file-37.i[916,929] [2023-12-24 17:59:50,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:59:50,032 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 17:59:50,043 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-s_file-37.i[916,929] [2023-12-24 17:59:50,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:59:50,090 INFO L206 MainTranslator]: Completed translation [2023-12-24 17:59:50,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50 WrapperNode [2023-12-24 17:59:50,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 17:59:50,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 17:59:50,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 17:59:50,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 17:59:50,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,148 INFO L138 Inliner]: procedures = 36, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 441 [2023-12-24 17:59:50,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 17:59:50,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 17:59:50,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 17:59:50,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 17:59:50,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,175 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 14]. The 17 writes are split as follows [0, 17]. [2023-12-24 17:59:50,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 17:59:50,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 17:59:50,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 17:59:50,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 17:59:50,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (1/1) ... [2023-12-24 17:59:50,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:59:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 17:59:50,240 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 17:59:50,246 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 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 17:59:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 17:59:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 17:59:50,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 17:59:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 17:59:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 17:59:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 17:59:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 17:59:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 17:59:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 17:59:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 17:59:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 17:59:50,338 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 17:59:50,340 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 17:59:50,738 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 17:59:50,771 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 17:59:50,771 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 17:59:50,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:59:50 BoogieIcfgContainer [2023-12-24 17:59:50,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 17:59:50,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 17:59:50,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 17:59:50,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 17:59:50,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 05:59:49" (1/3) ... [2023-12-24 17:59:50,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c1d1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:59:50, skipping insertion in model container [2023-12-24 17:59:50,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:59:50" (2/3) ... [2023-12-24 17:59:50,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c1d1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:59:50, skipping insertion in model container [2023-12-24 17:59:50,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:59:50" (3/3) ... [2023-12-24 17:59:50,779 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-37.i [2023-12-24 17:59:50,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 17:59:50,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 17:59:50,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 17:59:50,842 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;@552f1761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 17:59:50,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 17:59:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:59:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:59:50,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:59:50,858 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:50,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:59:50,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:59:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash -520379191, now seen corresponding path program 1 times [2023-12-24 17:59:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:59:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896060667] [2023-12-24 17:59:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:59:50,873 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 17:59:50,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:59:50,875 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 17:59:50,896 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 17:59:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:59:51,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 17:59:51,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:59:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-24 17:59:51,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:59:51,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:59:51,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896060667] [2023-12-24 17:59:51,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896060667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:59:51,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:59:51,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 17:59:51,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616861898] [2023-12-24 17:59:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:59:51,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 17:59:51,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:59:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 17:59:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:59:51,179 INFO L87 Difference]: Start difference. First operand has 90 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:59:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:59:51,210 INFO L93 Difference]: Finished difference Result 177 states and 279 transitions. [2023-12-24 17:59:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 17:59:51,213 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2023-12-24 17:59:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:59:51,219 INFO L225 Difference]: With dead ends: 177 [2023-12-24 17:59:51,219 INFO L226 Difference]: Without dead ends: 88 [2023-12-24 17:59:51,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 116 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 17:59:51,225 INFO L413 NwaCegarLoop]: 124 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, 124 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:59:51,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:59:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-24 17:59:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-24 17:59:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 71 states have (on average 1.380281690140845) internal successors, (98), 71 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:59:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 128 transitions. [2023-12-24 17:59:51,255 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 128 transitions. Word has length 117 [2023-12-24 17:59:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:59:51,255 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 128 transitions. [2023-12-24 17:59:51,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:59:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 128 transitions. [2023-12-24 17:59:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:59:51,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:59:51,258 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:51,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 17:59:51,461 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 17:59:51,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:59:51,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:59:51,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1290725147, now seen corresponding path program 1 times [2023-12-24 17:59:51,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:59:51,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730320201] [2023-12-24 17:59:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:59:51,463 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 17:59:51,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:59:51,468 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 17:59:51,504 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 17:59:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:59:51,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:59:51,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:59:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:59:51,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:59:51,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:59:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730320201] [2023-12-24 17:59:51,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730320201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:59:51,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:59:51,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:59:51,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862272730] [2023-12-24 17:59:51,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:59:51,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:59:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:59:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:59:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:59:51,710 INFO L87 Difference]: Start difference. First operand 88 states and 128 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:59:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:59:51,791 INFO L93 Difference]: Finished difference Result 196 states and 285 transitions. [2023-12-24 17:59:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:59:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 17:59:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:59:51,794 INFO L225 Difference]: With dead ends: 196 [2023-12-24 17:59:51,794 INFO L226 Difference]: Without dead ends: 109 [2023-12-24 17:59:51,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 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 17:59:51,795 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 46 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:59:51,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 474 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:59:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-24 17:59:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2023-12-24 17:59:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:59:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 132 transitions. [2023-12-24 17:59:51,803 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 132 transitions. Word has length 117 [2023-12-24 17:59:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:59:51,804 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 132 transitions. [2023-12-24 17:59:51,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:59:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 132 transitions. [2023-12-24 17:59:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:59:51,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:59:51,806 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:51,814 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 17:59:52,014 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 17:59:52,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:59:52,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:59:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 481378521, now seen corresponding path program 1 times [2023-12-24 17:59:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:59:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57643918] [2023-12-24 17:59:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:59:52,016 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 17:59:52,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:59:52,017 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 17:59:52,018 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 17:59:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:59:52,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:59:52,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:59:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:59:52,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:59:52,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:59:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57643918] [2023-12-24 17:59:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57643918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:59:52,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:59:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:59:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473308235] [2023-12-24 17:59:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:59:52,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:59:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:59:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:59:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:59:52,217 INFO L87 Difference]: Start difference. First operand 92 states and 132 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:59:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:59:52,351 INFO L93 Difference]: Finished difference Result 203 states and 290 transitions. [2023-12-24 17:59:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:59:52,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 17:59:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:59:52,357 INFO L225 Difference]: With dead ends: 203 [2023-12-24 17:59:52,357 INFO L226 Difference]: Without dead ends: 112 [2023-12-24 17:59:52,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:59:52,361 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 49 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:59:52,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 586 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:59:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-24 17:59:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2023-12-24 17:59:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 77 states have internal predecessors, (104), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:59:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 134 transitions. [2023-12-24 17:59:52,377 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 134 transitions. Word has length 117 [2023-12-24 17:59:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:59:52,377 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 134 transitions. [2023-12-24 17:59:52,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:59:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 134 transitions. [2023-12-24 17:59:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:59:52,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:59:52,379 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:52,387 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 17:59:52,579 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 17:59:52,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:59:52,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:59:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash 538636823, now seen corresponding path program 1 times [2023-12-24 17:59:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:59:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112639033] [2023-12-24 17:59:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:59:52,581 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 17:59:52,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:59:52,582 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 17:59:52,601 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 17:59:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:59:52,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:59:52,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:59:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:59:52,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:59:52,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:59:52,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112639033] [2023-12-24 17:59:52,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112639033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:59:52,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:59:52,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:59:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339405533] [2023-12-24 17:59:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:59:52,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:59:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:59:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:59:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:59:52,769 INFO L87 Difference]: Start difference. First operand 94 states and 134 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:59:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:59:52,877 INFO L93 Difference]: Finished difference Result 206 states and 290 transitions. [2023-12-24 17:59:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:59:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 17:59:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:59:52,878 INFO L225 Difference]: With dead ends: 206 [2023-12-24 17:59:52,879 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 17:59:52,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:59:52,880 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 40 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:59:52,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 692 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:59:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 17:59:52,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 96. [2023-12-24 17:59:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 79 states have (on average 1.3417721518987342) internal successors, (106), 79 states have internal predecessors, (106), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:59:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2023-12-24 17:59:52,884 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 117 [2023-12-24 17:59:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:59:52,885 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2023-12-24 17:59:52,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:59:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2023-12-24 17:59:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 17:59:52,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:59:52,886 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:52,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 17:59:53,091 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 17:59:53,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:59:53,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:59:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 538696405, now seen corresponding path program 1 times [2023-12-24 17:59:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:59:53,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430552690] [2023-12-24 17:59:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:59:53,093 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 17:59:53,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:59:53,094 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 17:59:53,098 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 17:59:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:59:53,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 17:59:53,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:59:53,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:59:53,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 17:59:53,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:53,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2023-12-24 17:59:53,683 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 51 [2023-12-24 17:59:54,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:54,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 69 [2023-12-24 17:59:54,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:54,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 72 [2023-12-24 17:59:54,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:54,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 72 [2023-12-24 17:59:54,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:54,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 72 [2023-12-24 17:59:55,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:55,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 99 treesize of output 96 [2023-12-24 17:59:55,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:55,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 118 treesize of output 46 [2023-12-24 17:59:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 265 proven. 63 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-24 17:59:55,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:59:55,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:59:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430552690] [2023-12-24 17:59:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430552690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:59:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1513479115] [2023-12-24 17:59:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:59:55,775 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:59:55,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:59:55,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:59:55,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 17:59:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:59:56,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 17:59:56,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:59:56,288 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 17:59:56,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:56,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 17:59:56,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:56,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 17:59:56,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:56,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 47 [2023-12-24 17:59:57,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:57,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 17:59:57,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:57,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53 [2023-12-24 17:59:57,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:57,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 17:59:57,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:57,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 17:59:57,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 76 [2023-12-24 17:59:58,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:59:58,026 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 86 treesize of output 46 [2023-12-24 17:59:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 298 proven. 42 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 17:59:58,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:59:58,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1513479115] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:59:58,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:59:58,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2023-12-24 17:59:58,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124961758] [2023-12-24 17:59:58,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:59:58,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 17:59:58,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:59:58,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 17:59:58,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 17:59:58,250 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand has 28 states, 25 states have (on average 4.0) internal successors, (100), 26 states have internal predecessors, (100), 12 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 9 states have call predecessors, (30), 12 states have call successors, (30) [2023-12-24 18:00:04,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:00:04,342 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2023-12-24 18:00:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-24 18:00:04,343 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.0) internal successors, (100), 26 states have internal predecessors, (100), 12 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 9 states have call predecessors, (30), 12 states have call successors, (30) Word has length 117 [2023-12-24 18:00:04,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:00:04,344 INFO L225 Difference]: With dead ends: 353 [2023-12-24 18:00:04,344 INFO L226 Difference]: Without dead ends: 258 [2023-12-24 18:00:04,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 354 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2220 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1414, Invalid=5896, Unknown=0, NotChecked=0, Total=7310 [2023-12-24 18:00:04,348 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 490 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:00:04,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 692 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-24 18:00:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-24 18:00:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 237. [2023-12-24 18:00:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 191 states have (on average 1.256544502617801) internal successors, (240), 191 states have internal predecessors, (240), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:00:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 300 transitions. [2023-12-24 18:00:04,379 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 300 transitions. Word has length 117 [2023-12-24 18:00:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:00:04,381 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 300 transitions. [2023-12-24 18:00:04,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.0) internal successors, (100), 26 states have internal predecessors, (100), 12 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 9 states have call predecessors, (30), 12 states have call successors, (30) [2023-12-24 18:00:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 300 transitions. [2023-12-24 18:00:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 18:00:04,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:00:04,387 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:04,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 18:00:04,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 18:00:04,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 18:00:04,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:00:04,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:00:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -278952045, now seen corresponding path program 1 times [2023-12-24 18:00:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:00:04,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109900132] [2023-12-24 18:00:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:00:04,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:00:04,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:00:04,804 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 18:00:04,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 18:00:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:00:05,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 18:00:05,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:00:05,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:00:05,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 18:00:05,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:05,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 18:00:05,450 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 52 treesize of output 33 [2023-12-24 18:00:05,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:05,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 62 [2023-12-24 18:00:06,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:06,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-24 18:00:06,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:06,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-24 18:00:06,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:06,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-24 18:00:06,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:06,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 89 [2023-12-24 18:00:07,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:07,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 95 [2023-12-24 18:00:07,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:07,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 142 treesize of output 58 [2023-12-24 18:00:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 227 proven. 102 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-24 18:00:07,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:00:13,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:00:13,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109900132] [2023-12-24 18:00:13,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109900132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:00:13,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [602922027] [2023-12-24 18:00:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:00:13,243 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:00:13,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:00:13,244 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 18:00:13,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 18:00:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:00:13,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-24 18:00:13,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:00:13,899 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 18:00:14,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:14,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 18:00:15,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:15,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 48 [2023-12-24 18:00:15,537 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 58 treesize of output 51 [2023-12-24 18:00:16,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:16,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 76 [2023-12-24 18:00:17,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:17,069 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 15 case distinctions, treesize of input 75 treesize of output 74 [2023-12-24 18:00:17,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:17,351 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 15 case distinctions, treesize of input 75 treesize of output 74 [2023-12-24 18:00:17,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:17,527 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 15 case distinctions, treesize of input 75 treesize of output 74 [2023-12-24 18:00:17,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 94 [2023-12-24 18:00:18,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:18,419 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 28 case distinctions, treesize of input 111 treesize of output 104 [2023-12-24 18:00:18,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:18,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 65 [2023-12-24 18:00:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 227 proven. 102 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-24 18:00:18,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:00:24,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [602922027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:00:24,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:00:24,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 46 [2023-12-24 18:00:24,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603735405] [2023-12-24 18:00:24,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:00:24,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-24 18:00:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:00:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-24 18:00:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=2837, Unknown=0, NotChecked=0, Total=3660 [2023-12-24 18:00:24,122 INFO L87 Difference]: Start difference. First operand 237 states and 300 transitions. Second operand has 46 states, 38 states have (on average 3.0) internal successors, (114), 41 states have internal predecessors, (114), 16 states have call successors, (30), 12 states have call predecessors, (30), 16 states have return successors, (30), 13 states have call predecessors, (30), 16 states have call successors, (30) [2023-12-24 18:00:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:00:31,003 INFO L93 Difference]: Finished difference Result 494 states and 622 transitions. [2023-12-24 18:00:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-24 18:00:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 38 states have (on average 3.0) internal successors, (114), 41 states have internal predecessors, (114), 16 states have call successors, (30), 12 states have call predecessors, (30), 16 states have return successors, (30), 13 states have call predecessors, (30), 16 states have call successors, (30) Word has length 117 [2023-12-24 18:00:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:00:31,005 INFO L225 Difference]: With dead ends: 494 [2023-12-24 18:00:31,005 INFO L226 Difference]: Without dead ends: 258 [2023-12-24 18:00:31,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 275 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1592, Invalid=6418, Unknown=0, NotChecked=0, Total=8010 [2023-12-24 18:00:31,007 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 547 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:00:31,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1061 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 18:00:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-24 18:00:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 237. [2023-12-24 18:00:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 191 states have (on average 1.2460732984293195) internal successors, (238), 191 states have internal predecessors, (238), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:00:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 298 transitions. [2023-12-24 18:00:31,031 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 298 transitions. Word has length 117 [2023-12-24 18:00:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:00:31,032 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 298 transitions. [2023-12-24 18:00:31,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 38 states have (on average 3.0) internal successors, (114), 41 states have internal predecessors, (114), 16 states have call successors, (30), 12 states have call predecessors, (30), 16 states have return successors, (30), 13 states have call predecessors, (30), 16 states have call successors, (30) [2023-12-24 18:00:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 298 transitions. [2023-12-24 18:00:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 18:00:31,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:00:31,033 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:31,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-24 18:00:31,247 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 18:00:31,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 18:00:31,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:00:31,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:00:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2021870545, now seen corresponding path program 1 times [2023-12-24 18:00:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:00:31,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144072167] [2023-12-24 18:00:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:00:31,440 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 18:00:31,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:00:31,441 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:00:31,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 18:00:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:00:31,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 18:00:31,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:00:31,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:00:31,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:00:31,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:31,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2023-12-24 18:00:31,930 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 47 treesize of output 52 [2023-12-24 18:00:32,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:32,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-24 18:00:32,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:32,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 75 [2023-12-24 18:00:33,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:33,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 78 [2023-12-24 18:00:33,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:33,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 78 [2023-12-24 18:00:33,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:33,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 102 [2023-12-24 18:00:33,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:33,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 130 treesize of output 108 [2023-12-24 18:00:33,985 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 132 treesize of output 119 [2023-12-24 18:00:34,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:34,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 192 treesize of output 152 [2023-12-24 18:00:34,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:34,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 131 [2023-12-24 18:00:34,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:34,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 149 treesize of output 67 [2023-12-24 18:00:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 264 proven. 102 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-24 18:00:34,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:00:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:00:36,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:00:36,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144072167] [2023-12-24 18:00:36,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144072167] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:00:36,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:00:36,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25] total 28 [2023-12-24 18:00:36,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923603491] [2023-12-24 18:00:36,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:00:36,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:00:36,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:00:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:00:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2023-12-24 18:00:36,513 INFO L87 Difference]: Start difference. First operand 237 states and 298 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:00:42,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:00:46,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:00:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:00:48,733 INFO L93 Difference]: Finished difference Result 549 states and 698 transitions. [2023-12-24 18:00:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:00:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-24 18:00:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:00:48,739 INFO L225 Difference]: With dead ends: 549 [2023-12-24 18:00:48,739 INFO L226 Difference]: Without dead ends: 313 [2023-12-24 18:00:48,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 204 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:00:48,741 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 193 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:00:48,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 273 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2023-12-24 18:00:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-24 18:00:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 239. [2023-12-24 18:00:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 193 states have (on average 1.238341968911917) internal successors, (239), 193 states have internal predecessors, (239), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:00:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 299 transitions. [2023-12-24 18:00:48,757 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 299 transitions. Word has length 117 [2023-12-24 18:00:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:00:48,757 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 299 transitions. [2023-12-24 18:00:48,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:00:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 299 transitions. [2023-12-24 18:00:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-24 18:00:48,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:00:48,759 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:48,773 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 (10)] Ended with exit code 0 [2023-12-24 18:00:48,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:00:48,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:00:48,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:00:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1010753295, now seen corresponding path program 1 times [2023-12-24 18:00:48,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:00:48,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282360537] [2023-12-24 18:00:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:00:48,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:00:48,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:00:48,971 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 18:00:48,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 18:00:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:00:49,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 18:00:49,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:00:49,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 18:00:49,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:00:49,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:00:49,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 18:00:49,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:00:49,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 18:00:49,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 60 [2023-12-24 18:00:49,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 66 [2023-12-24 18:00:49,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 66 [2023-12-24 18:00:49,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 75 [2023-12-24 18:00:49,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 78 [2023-12-24 18:00:49,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:49,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 116 treesize of output 50 [2023-12-24 18:00:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-24 18:00:49,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:00:49,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:00:49,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282360537] [2023-12-24 18:00:49,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282360537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:00:49,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:00:49,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 18:00:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219318406] [2023-12-24 18:00:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:00:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:00:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:00:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:00:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:00:49,837 INFO L87 Difference]: Start difference. First operand 239 states and 299 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:00:50,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:00:50,733 INFO L93 Difference]: Finished difference Result 502 states and 624 transitions. [2023-12-24 18:00:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:00:50,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2023-12-24 18:00:50,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:00:50,736 INFO L225 Difference]: With dead ends: 502 [2023-12-24 18:00:50,736 INFO L226 Difference]: Without dead ends: 264 [2023-12-24 18:00:50,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:00:50,737 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 220 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:00:50,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 224 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 18:00:50,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-24 18:00:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 235. [2023-12-24 18:00:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 189 states have (on average 1.2328042328042328) internal successors, (233), 189 states have internal predecessors, (233), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:00:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 293 transitions. [2023-12-24 18:00:50,760 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 293 transitions. Word has length 117 [2023-12-24 18:00:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:00:50,760 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 293 transitions. [2023-12-24 18:00:50,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:00:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 293 transitions. [2023-12-24 18:00:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 18:00:50,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:00:50,761 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:50,769 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 18:00:50,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:00:50,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:00:50,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:00:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash -431286900, now seen corresponding path program 1 times [2023-12-24 18:00:50,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:00:50,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97715854] [2023-12-24 18:00:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:00:50,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:00:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:00:50,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:00:50,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 18:00:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:00:51,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 18:00:51,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:00:51,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:00:51,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 18:00:51,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2023-12-24 18:00:51,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 41 [2023-12-24 18:00:51,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 41 [2023-12-24 18:00:51,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 65 [2023-12-24 18:00:51,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 71 [2023-12-24 18:00:51,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 71 [2023-12-24 18:00:51,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 89 [2023-12-24 18:00:51,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:51,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 102 treesize of output 92 [2023-12-24 18:00:52,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:52,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 92 treesize of output 34 [2023-12-24 18:00:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 24 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-24 18:00:52,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:00:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-24 18:00:52,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:00:52,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97715854] [2023-12-24 18:00:52,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97715854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 18:00:52,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:00:52,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-12-24 18:00:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463656652] [2023-12-24 18:00:52,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:00:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 18:00:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:00:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 18:00:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-24 18:00:52,363 INFO L87 Difference]: Start difference. First operand 235 states and 293 transitions. Second operand has 16 states, 14 states have (on average 6.214285714285714) internal successors, (87), 16 states have internal predecessors, (87), 6 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 18:00:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:00:54,934 INFO L93 Difference]: Finished difference Result 559 states and 684 transitions. [2023-12-24 18:00:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 18:00:54,935 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.214285714285714) internal successors, (87), 16 states have internal predecessors, (87), 6 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 120 [2023-12-24 18:00:54,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:00:54,937 INFO L225 Difference]: With dead ends: 559 [2023-12-24 18:00:54,937 INFO L226 Difference]: Without dead ends: 325 [2023-12-24 18:00:54,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=507, Invalid=1563, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 18:00:54,939 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 387 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:00:54,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 320 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 18:00:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-24 18:00:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 239. [2023-12-24 18:00:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 192 states have (on average 1.21875) internal successors, (234), 192 states have internal predecessors, (234), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:00:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 294 transitions. [2023-12-24 18:00:54,963 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 294 transitions. Word has length 120 [2023-12-24 18:00:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:00:54,963 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 294 transitions. [2023-12-24 18:00:54,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.214285714285714) internal successors, (87), 16 states have internal predecessors, (87), 6 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 18:00:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 294 transitions. [2023-12-24 18:00:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 18:00:54,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:00:54,964 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:54,971 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 (12)] Ended with exit code 0 [2023-12-24 18:00:55,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:00:55,171 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:00:55,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:00:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1442404150, now seen corresponding path program 1 times [2023-12-24 18:00:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:00:55,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697449338] [2023-12-24 18:00:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:00:55,172 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 18:00:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:00:55,173 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 18:00:55,174 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 18:00:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:00:55,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 18:00:55,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:00:55,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:00:55,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 18:00:55,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:55,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2023-12-24 18:00:55,715 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 51 treesize of output 41 [2023-12-24 18:00:56,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 55 [2023-12-24 18:00:56,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 65 [2023-12-24 18:00:56,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 68 [2023-12-24 18:00:56,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 68 [2023-12-24 18:00:56,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 92 [2023-12-24 18:00:56,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 108 treesize of output 98 [2023-12-24 18:00:56,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 108 treesize of output 98 [2023-12-24 18:00:56,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:56,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 108 treesize of output 107 [2023-12-24 18:00:57,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:57,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 123 treesize of output 110 [2023-12-24 18:00:57,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:57,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 123 treesize of output 47 [2023-12-24 18:00:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 295 proven. 63 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-24 18:00:57,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:00:57,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:00:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697449338] [2023-12-24 18:00:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697449338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:00:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [757307994] [2023-12-24 18:00:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:00:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:00:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:00:57,937 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 18:00:57,937 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 18:00:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:00:58,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 18:00:58,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:00:58,520 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 18:00:58,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:58,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 18:00:58,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:58,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 18:00:58,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:58,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 18:00:58,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:58,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-24 18:00:59,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:59,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 18:00:59,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:59,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2023-12-24 18:00:59,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:59,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 35 [2023-12-24 18:00:59,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2023-12-24 18:00:59,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:59,685 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 15 case distinctions, treesize of input 86 treesize of output 77 [2023-12-24 18:00:59,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:59,790 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 15 case distinctions, treesize of input 86 treesize of output 77 [2023-12-24 18:00:59,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:59,814 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 21 case distinctions, treesize of input 88 treesize of output 93 [2023-12-24 18:00:59,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:00:59,967 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 28 case distinctions, treesize of input 99 treesize of output 89 [2023-12-24 18:01:00,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:00,271 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 103 treesize of output 51 [2023-12-24 18:01:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 194 proven. 42 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-24 18:01:00,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:01:00,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [757307994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:01:00,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:01:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2023-12-24 18:01:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625710473] [2023-12-24 18:01:00,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:01:00,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 18:01:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 18:01:00,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1401, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 18:01:00,851 INFO L87 Difference]: Start difference. First operand 239 states and 294 transitions. Second operand has 30 states, 27 states have (on average 3.962962962962963) internal successors, (107), 30 states have internal predecessors, (107), 10 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (30), 7 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-24 18:01:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:07,304 INFO L93 Difference]: Finished difference Result 539 states and 663 transitions. [2023-12-24 18:01:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-24 18:01:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.962962962962963) internal successors, (107), 30 states have internal predecessors, (107), 10 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (30), 7 states have call predecessors, (30), 10 states have call successors, (30) Word has length 120 [2023-12-24 18:01:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:07,306 INFO L225 Difference]: With dead ends: 539 [2023-12-24 18:01:07,306 INFO L226 Difference]: Without dead ends: 301 [2023-12-24 18:01:07,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 364 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1285, Invalid=6371, Unknown=0, NotChecked=0, Total=7656 [2023-12-24 18:01:07,308 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 529 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:07,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 698 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 18:01:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-24 18:01:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 239. [2023-12-24 18:01:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 192 states have (on average 1.2083333333333333) internal successors, (232), 192 states have internal predecessors, (232), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:01:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 292 transitions. [2023-12-24 18:01:07,333 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 292 transitions. Word has length 120 [2023-12-24 18:01:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:07,333 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 292 transitions. [2023-12-24 18:01:07,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.962962962962963) internal successors, (107), 30 states have internal predecessors, (107), 10 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (30), 7 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-24 18:01:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 292 transitions. [2023-12-24 18:01:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-24 18:01:07,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:07,334 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:07,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:07,548 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 18:01:07,738 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 18:01:07,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:07,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2029210164, now seen corresponding path program 1 times [2023-12-24 18:01:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:07,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625807070] [2023-12-24 18:01:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:07,740 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 18:01:07,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:07,741 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 18:01:07,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 18:01:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:08,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 18:01:08,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:08,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:01:08,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 18:01:08,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 18:01:08,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:08,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 53 [2023-12-24 18:01:08,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:08,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 70 [2023-12-24 18:01:08,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:08,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 73 [2023-12-24 18:01:08,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:08,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 91 [2023-12-24 18:01:08,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:08,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 94 [2023-12-24 18:01:08,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:08,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 139 treesize of output 57 [2023-12-24 18:01:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 200 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-24 18:01:08,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:01:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:08,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625807070] [2023-12-24 18:01:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625807070] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:01:08,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:01:08,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 18 [2023-12-24 18:01:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355075393] [2023-12-24 18:01:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:08,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:01:08,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:08,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:01:08,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:01:08,855 INFO L87 Difference]: Start difference. First operand 239 states and 292 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:09,439 INFO L93 Difference]: Finished difference Result 623 states and 752 transitions. [2023-12-24 18:01:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:01:09,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 120 [2023-12-24 18:01:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:09,442 INFO L225 Difference]: With dead ends: 623 [2023-12-24 18:01:09,442 INFO L226 Difference]: Without dead ends: 385 [2023-12-24 18:01:09,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:01:09,444 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 176 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:09,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 508 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:01:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-24 18:01:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 260. [2023-12-24 18:01:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 213 states have (on average 1.215962441314554) internal successors, (259), 213 states have internal predecessors, (259), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:01:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 319 transitions. [2023-12-24 18:01:09,485 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 319 transitions. Word has length 120 [2023-12-24 18:01:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:09,487 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 319 transitions. [2023-12-24 18:01:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 319 transitions. [2023-12-24 18:01:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:01:09,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:09,488 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:09,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:09,691 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 18:01:09,692 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:09,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:09,692 INFO L85 PathProgramCache]: Analyzing trace with hash -781361801, now seen corresponding path program 1 times [2023-12-24 18:01:09,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:09,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895785535] [2023-12-24 18:01:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:09,693 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 18:01:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:09,693 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:09,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 18:01:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:09,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 18:01:09,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:09,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-24 18:01:09,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:09,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 18:01:10,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:10,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 18:01:10,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:10,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 58 [2023-12-24 18:01:10,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:10,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 61 [2023-12-24 18:01:10,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:10,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 39 [2023-12-24 18:01:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:10,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:10,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:10,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895785535] [2023-12-24 18:01:10,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895785535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:10,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:10,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:01:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828065261] [2023-12-24 18:01:10,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:10,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:01:10,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:01:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:01:10,243 INFO L87 Difference]: Start difference. First operand 260 states and 319 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:10,762 INFO L93 Difference]: Finished difference Result 297 states and 359 transitions. [2023-12-24 18:01:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:01:10,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-24 18:01:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:10,764 INFO L225 Difference]: With dead ends: 297 [2023-12-24 18:01:10,764 INFO L226 Difference]: Without dead ends: 295 [2023-12-24 18:01:10,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:01:10,764 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 114 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:10,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 319 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:01:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-24 18:01:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 264. [2023-12-24 18:01:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 217 states have (on average 1.2119815668202765) internal successors, (263), 217 states have internal predecessors, (263), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:01:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 323 transitions. [2023-12-24 18:01:10,790 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 323 transitions. Word has length 122 [2023-12-24 18:01:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:10,791 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 323 transitions. [2023-12-24 18:01:10,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 323 transitions. [2023-12-24 18:01:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:01:10,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:10,791 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:10,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:10,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:11,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash -781302219, now seen corresponding path program 1 times [2023-12-24 18:01:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:11,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110416265] [2023-12-24 18:01:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:11,000 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 18:01:11,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:11,001 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:11,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 18:01:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:11,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 18:01:11,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:11,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:01:11,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-12-24 18:01:11,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:11,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2023-12-24 18:01:11,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:11,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 45 [2023-12-24 18:01:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:11,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:11,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:11,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110416265] [2023-12-24 18:01:11,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110416265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:11,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:11,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:01:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666241969] [2023-12-24 18:01:11,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:11,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:01:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:11,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:01:11,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:01:11,473 INFO L87 Difference]: Start difference. First operand 264 states and 323 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:12,194 INFO L93 Difference]: Finished difference Result 595 states and 723 transitions. [2023-12-24 18:01:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:01:12,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-24 18:01:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:12,197 INFO L225 Difference]: With dead ends: 595 [2023-12-24 18:01:12,197 INFO L226 Difference]: Without dead ends: 332 [2023-12-24 18:01:12,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 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 18:01:12,199 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 146 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:12,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 412 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 18:01:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-24 18:01:12,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 264. [2023-12-24 18:01:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 217 states have (on average 1.2027649769585254) internal successors, (261), 217 states have internal predecessors, (261), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:01:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 321 transitions. [2023-12-24 18:01:12,232 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 321 transitions. Word has length 122 [2023-12-24 18:01:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:12,233 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 321 transitions. [2023-12-24 18:01:12,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 321 transitions. [2023-12-24 18:01:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:01:12,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:12,238 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:12,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:12,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:12,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -724043917, now seen corresponding path program 1 times [2023-12-24 18:01:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053617806] [2023-12-24 18:01:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:12,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:12,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:12,442 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:12,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 18:01:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:12,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 18:01:12,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:12,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:01:12,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:01:12,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 18:01:12,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:01:12,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:01:12,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:12,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2023-12-24 18:01:12,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:12,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 18:01:12,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:12,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 18:01:12,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:12,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 71 [2023-12-24 18:01:13,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:13,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 74 [2023-12-24 18:01:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-24 18:01:13,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:13,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:13,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053617806] [2023-12-24 18:01:13,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053617806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:13,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:13,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:01:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74518899] [2023-12-24 18:01:13,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:13,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:01:13,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:13,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:01:13,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:01:13,270 INFO L87 Difference]: Start difference. First operand 264 states and 321 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:01:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:14,128 INFO L93 Difference]: Finished difference Result 556 states and 672 transitions. [2023-12-24 18:01:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:01:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2023-12-24 18:01:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:14,130 INFO L225 Difference]: With dead ends: 556 [2023-12-24 18:01:14,130 INFO L226 Difference]: Without dead ends: 293 [2023-12-24 18:01:14,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:01:14,131 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 104 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:14,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 246 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 18:01:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-24 18:01:14,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 264. [2023-12-24 18:01:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 217 states have (on average 1.1935483870967742) internal successors, (259), 217 states have internal predecessors, (259), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:01:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 319 transitions. [2023-12-24 18:01:14,177 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 319 transitions. Word has length 122 [2023-12-24 18:01:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:14,177 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 319 transitions. [2023-12-24 18:01:14,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:01:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 319 transitions. [2023-12-24 18:01:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-24 18:01:14,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:14,179 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:14,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:14,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:14,386 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:14,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1533390543, now seen corresponding path program 1 times [2023-12-24 18:01:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:14,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534672594] [2023-12-24 18:01:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:14,387 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 18:01:14,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:14,388 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:14,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 18:01:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:14,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 18:01:14,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:14,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:01:14,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 18:01:14,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 18:01:14,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:14,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 53 [2023-12-24 18:01:14,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:14,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 59 [2023-12-24 18:01:14,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:14,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 59 [2023-12-24 18:01:15,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:15,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 77 [2023-12-24 18:01:15,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:15,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 107 treesize of output 97 [2023-12-24 18:01:15,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:15,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 175 treesize of output 75 [2023-12-24 18:01:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 200 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-24 18:01:15,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:01:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:15,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534672594] [2023-12-24 18:01:15,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534672594] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:01:15,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:01:15,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 18 [2023-12-24 18:01:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538859647] [2023-12-24 18:01:15,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:15,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:01:15,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:01:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:01:15,617 INFO L87 Difference]: Start difference. First operand 264 states and 319 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:16,090 INFO L93 Difference]: Finished difference Result 500 states and 600 transitions. [2023-12-24 18:01:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:01:16,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-24 18:01:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:16,092 INFO L225 Difference]: With dead ends: 500 [2023-12-24 18:01:16,092 INFO L226 Difference]: Without dead ends: 350 [2023-12-24 18:01:16,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:01:16,093 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 106 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:16,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 535 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 18:01:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-24 18:01:16,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 286. [2023-12-24 18:01:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 239 states have (on average 1.1841004184100419) internal successors, (283), 239 states have internal predecessors, (283), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 18:01:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 343 transitions. [2023-12-24 18:01:16,121 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 343 transitions. Word has length 122 [2023-12-24 18:01:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:16,122 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 343 transitions. [2023-12-24 18:01:16,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 343 transitions. [2023-12-24 18:01:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-24 18:01:16,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:16,122 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:16,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:16,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:16,333 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:16,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1256039024, now seen corresponding path program 1 times [2023-12-24 18:01:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820923037] [2023-12-24 18:01:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:16,334 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 18:01:16,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:16,335 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:16,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 18:01:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:16,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:01:16,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:16,571 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 18:01:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:16,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:16,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820923037] [2023-12-24 18:01:16,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820923037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:16,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:16,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:01:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548484268] [2023-12-24 18:01:16,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:16,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:01:16,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:16,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:01:16,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:01:16,609 INFO L87 Difference]: Start difference. First operand 286 states and 343 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:17,203 INFO L93 Difference]: Finished difference Result 677 states and 800 transitions. [2023-12-24 18:01:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:01:17,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-12-24 18:01:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:17,205 INFO L225 Difference]: With dead ends: 677 [2023-12-24 18:01:17,205 INFO L226 Difference]: Without dead ends: 392 [2023-12-24 18:01:17,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:01:17,206 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 109 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 315 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:01:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-12-24 18:01:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 374. [2023-12-24 18:01:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 306 states have (on average 1.1601307189542485) internal successors, (355), 307 states have internal predecessors, (355), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 18:01:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 439 transitions. [2023-12-24 18:01:17,246 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 439 transitions. Word has length 124 [2023-12-24 18:01:17,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:17,247 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 439 transitions. [2023-12-24 18:01:17,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:17,247 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 439 transitions. [2023-12-24 18:01:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 18:01:17,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:17,247 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:17,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:17,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:17,452 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:17,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:17,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1406247993, now seen corresponding path program 1 times [2023-12-24 18:01:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:17,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361526484] [2023-12-24 18:01:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:17,453 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 18:01:17,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:17,454 INFO L229 MonitoredProcess]: Starting monitored process 21 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 18:01:17,455 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 (21)] Waiting until timeout for monitored process [2023-12-24 18:01:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:17,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 18:01:17,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:17,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:17,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:17,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361526484] [2023-12-24 18:01:17,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361526484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:17,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:17,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:01:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435372118] [2023-12-24 18:01:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:01:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:01:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:01:17,643 INFO L87 Difference]: Start difference. First operand 374 states and 439 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:17,738 INFO L93 Difference]: Finished difference Result 774 states and 907 transitions. [2023-12-24 18:01:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:01:17,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 126 [2023-12-24 18:01:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:17,740 INFO L225 Difference]: With dead ends: 774 [2023-12-24 18:01:17,740 INFO L226 Difference]: Without dead ends: 401 [2023-12-24 18:01:17,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:01:17,741 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 39 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:17,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 569 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:01:17,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-24 18:01:17,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 383. [2023-12-24 18:01:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 315 states have (on average 1.1555555555555554) internal successors, (364), 316 states have internal predecessors, (364), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 18:01:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 448 transitions. [2023-12-24 18:01:17,781 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 448 transitions. Word has length 126 [2023-12-24 18:01:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:17,781 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 448 transitions. [2023-12-24 18:01:17,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 448 transitions. [2023-12-24 18:01:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 18:01:17,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:17,782 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:17,791 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 (21)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:17,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:01:17,989 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:17,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash 988518698, now seen corresponding path program 1 times [2023-12-24 18:01:17,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:17,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77004678] [2023-12-24 18:01:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:17,990 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 18:01:17,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:17,991 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:18,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 18:01:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:18,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 18:01:18,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:18,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:01:18,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 18:01:18,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:18,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 67 [2023-12-24 18:01:18,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:18,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 73 [2023-12-24 18:01:18,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:18,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 73 [2023-12-24 18:01:18,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:18,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 91 [2023-12-24 18:01:18,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:18,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 131 treesize of output 94 [2023-12-24 18:01:19,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:19,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 139 treesize of output 51 [2023-12-24 18:01:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 18:01:19,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:19,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:19,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77004678] [2023-12-24 18:01:19,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77004678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:19,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:19,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:01:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559731503] [2023-12-24 18:01:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 18:01:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 18:01:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:01:19,264 INFO L87 Difference]: Start difference. First operand 383 states and 448 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:01:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:21,354 INFO L93 Difference]: Finished difference Result 1025 states and 1197 transitions. [2023-12-24 18:01:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 18:01:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2023-12-24 18:01:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:21,360 INFO L225 Difference]: With dead ends: 1025 [2023-12-24 18:01:21,360 INFO L226 Difference]: Without dead ends: 611 [2023-12-24 18:01:21,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:01:21,364 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 190 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:21,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 496 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 18:01:21,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-12-24 18:01:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 529. [2023-12-24 18:01:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 434 states have (on average 1.1428571428571428) internal successors, (496), 436 states have internal predecessors, (496), 60 states have call successors, (60), 34 states have call predecessors, (60), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 18:01:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 616 transitions. [2023-12-24 18:01:21,424 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 616 transitions. Word has length 130 [2023-12-24 18:01:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:21,425 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 616 transitions. [2023-12-24 18:01:21,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:01:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 616 transitions. [2023-12-24 18:01:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 18:01:21,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:21,426 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:21,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:21,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:21,634 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:21,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1029193448, now seen corresponding path program 1 times [2023-12-24 18:01:21,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:21,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51102493] [2023-12-24 18:01:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:21,635 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 18:01:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:21,636 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:21,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 18:01:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:21,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 18:01:21,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 18:01:21,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:21,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:21,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51102493] [2023-12-24 18:01:21,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51102493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:21,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:21,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:01:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111065544] [2023-12-24 18:01:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:21,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:01:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:01:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:01:21,831 INFO L87 Difference]: Start difference. First operand 529 states and 616 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:01:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:21,928 INFO L93 Difference]: Finished difference Result 1065 states and 1243 transitions. [2023-12-24 18:01:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:01:21,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2023-12-24 18:01:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:21,930 INFO L225 Difference]: With dead ends: 1065 [2023-12-24 18:01:21,930 INFO L226 Difference]: Without dead ends: 537 [2023-12-24 18:01:21,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 18:01:21,931 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 7 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:21,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 357 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:01:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-24 18:01:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 529. [2023-12-24 18:01:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 434 states have (on average 1.1382488479262673) internal successors, (494), 436 states have internal predecessors, (494), 60 states have call successors, (60), 34 states have call predecessors, (60), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 18:01:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 614 transitions. [2023-12-24 18:01:21,991 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 614 transitions. Word has length 130 [2023-12-24 18:01:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:21,991 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 614 transitions. [2023-12-24 18:01:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 18:01:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 614 transitions. [2023-12-24 18:01:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 18:01:21,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:21,992 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:21,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:22,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:22,193 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:22,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash -469590170, now seen corresponding path program 1 times [2023-12-24 18:01:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681391339] [2023-12-24 18:01:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:22,194 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 18:01:22,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:22,195 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:22,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 18:01:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:22,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 18:01:22,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-24 18:01:22,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:22,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681391339] [2023-12-24 18:01:22,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681391339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:22,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:22,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:01:22,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381185832] [2023-12-24 18:01:22,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:22,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:01:22,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:22,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:01:22,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:01:22,416 INFO L87 Difference]: Start difference. First operand 529 states and 614 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:01:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:22,635 INFO L93 Difference]: Finished difference Result 1085 states and 1257 transitions. [2023-12-24 18:01:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:01:22,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 132 [2023-12-24 18:01:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:22,637 INFO L225 Difference]: With dead ends: 1085 [2023-12-24 18:01:22,637 INFO L226 Difference]: Without dead ends: 553 [2023-12-24 18:01:22,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:01:22,639 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 6 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:22,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 474 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:01:22,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-12-24 18:01:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 529. [2023-12-24 18:01:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 434 states have (on average 1.1336405529953917) internal successors, (492), 436 states have internal predecessors, (492), 60 states have call successors, (60), 34 states have call predecessors, (60), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 18:01:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 612 transitions. [2023-12-24 18:01:22,715 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 612 transitions. Word has length 132 [2023-12-24 18:01:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:22,715 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 612 transitions. [2023-12-24 18:01:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-24 18:01:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 612 transitions. [2023-12-24 18:01:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 18:01:22,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:22,716 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:22,736 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 (24)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:22,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:22,923 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:22,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:22,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1856375580, now seen corresponding path program 1 times [2023-12-24 18:01:22,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:22,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249688327] [2023-12-24 18:01:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:22,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:22,926 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:22,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 18:01:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:23,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 18:01:23,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:23,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:01:23,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2023-12-24 18:01:23,350 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 57 treesize of output 21 [2023-12-24 18:01:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:23,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:23,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:23,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249688327] [2023-12-24 18:01:23,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249688327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:23,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:23,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:01:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995289834] [2023-12-24 18:01:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:23,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:01:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:01:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:01:23,373 INFO L87 Difference]: Start difference. First operand 529 states and 612 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:23,942 INFO L93 Difference]: Finished difference Result 920 states and 1057 transitions. [2023-12-24 18:01:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:01:23,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 132 [2023-12-24 18:01:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:23,960 INFO L225 Difference]: With dead ends: 920 [2023-12-24 18:01:23,960 INFO L226 Difference]: Without dead ends: 526 [2023-12-24 18:01:23,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:01:23,962 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 63 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:23,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 387 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:01:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-24 18:01:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 356. [2023-12-24 18:01:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 299 states have (on average 1.160535117056856) internal successors, (347), 299 states have internal predecessors, (347), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:01:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 419 transitions. [2023-12-24 18:01:24,019 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 419 transitions. Word has length 132 [2023-12-24 18:01:24,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:24,019 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 419 transitions. [2023-12-24 18:01:24,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 419 transitions. [2023-12-24 18:01:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 18:01:24,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:24,020 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:24,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:24,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:24,228 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:24,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash -229430333, now seen corresponding path program 1 times [2023-12-24 18:01:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853470843] [2023-12-24 18:01:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:24,229 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 18:01:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:24,230 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:24,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 18:01:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:24,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 18:01:24,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:24,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:24,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 20 [2023-12-24 18:01:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:24,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:24,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:24,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853470843] [2023-12-24 18:01:24,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853470843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:24,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:24,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:01:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314715966] [2023-12-24 18:01:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:24,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:01:24,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:01:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:01:24,627 INFO L87 Difference]: Start difference. First operand 356 states and 419 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:26,957 INFO L93 Difference]: Finished difference Result 1019 states and 1177 transitions. [2023-12-24 18:01:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 18:01:26,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 18:01:26,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:26,962 INFO L225 Difference]: With dead ends: 1019 [2023-12-24 18:01:26,962 INFO L226 Difference]: Without dead ends: 664 [2023-12-24 18:01:26,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:01:26,963 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 147 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:26,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 587 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 18:01:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-12-24 18:01:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 612. [2023-12-24 18:01:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 507 states have (on average 1.1400394477317555) internal successors, (578), 511 states have internal predecessors, (578), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 60 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 18:01:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 706 transitions. [2023-12-24 18:01:27,047 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 706 transitions. Word has length 134 [2023-12-24 18:01:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:27,047 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 706 transitions. [2023-12-24 18:01:27,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 706 transitions. [2023-12-24 18:01:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 18:01:27,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:27,048 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:27,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:27,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:27,255 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:27,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2071392257, now seen corresponding path program 1 times [2023-12-24 18:01:27,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:27,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596661778] [2023-12-24 18:01:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:27,256 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 18:01:27,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:27,257 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:27,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 18:01:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:27,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 18:01:27,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:27,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:27,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:27,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596661778] [2023-12-24 18:01:27,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596661778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:27,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:27,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 18:01:27,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339793660] [2023-12-24 18:01:27,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:27,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:01:27,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:01:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:01:27,649 INFO L87 Difference]: Start difference. First operand 612 states and 706 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:28,595 INFO L93 Difference]: Finished difference Result 1307 states and 1505 transitions. [2023-12-24 18:01:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:01:28,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 18:01:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:28,599 INFO L225 Difference]: With dead ends: 1307 [2023-12-24 18:01:28,599 INFO L226 Difference]: Without dead ends: 696 [2023-12-24 18:01:28,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:01:28,600 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 164 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:28,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 446 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 18:01:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-24 18:01:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 614. [2023-12-24 18:01:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 509 states have (on average 1.1316306483300589) internal successors, (576), 513 states have internal predecessors, (576), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 60 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 18:01:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 704 transitions. [2023-12-24 18:01:28,706 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 704 transitions. Word has length 134 [2023-12-24 18:01:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:28,706 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 704 transitions. [2023-12-24 18:01:28,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 704 transitions. [2023-12-24 18:01:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 18:01:28,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:28,707 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:28,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:28,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:28,914 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:28,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:28,915 INFO L85 PathProgramCache]: Analyzing trace with hash -206798079, now seen corresponding path program 1 times [2023-12-24 18:01:28,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:28,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544123488] [2023-12-24 18:01:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:28,915 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 18:01:28,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:28,916 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:28,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 18:01:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:29,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 18:01:29,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:29,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:29,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544123488] [2023-12-24 18:01:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544123488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:29,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 18:01:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820056591] [2023-12-24 18:01:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:01:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:29,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:01:29,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:01:29,332 INFO L87 Difference]: Start difference. First operand 614 states and 704 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:30,288 INFO L93 Difference]: Finished difference Result 1011 states and 1166 transitions. [2023-12-24 18:01:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:01:30,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 18:01:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:30,290 INFO L225 Difference]: With dead ends: 1011 [2023-12-24 18:01:30,290 INFO L226 Difference]: Without dead ends: 398 [2023-12-24 18:01:30,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:01:30,291 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 179 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:30,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 264 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 18:01:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-24 18:01:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 356. [2023-12-24 18:01:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 299 states have (on average 1.140468227424749) internal successors, (341), 299 states have internal predecessors, (341), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:01:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 413 transitions. [2023-12-24 18:01:30,345 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 413 transitions. Word has length 134 [2023-12-24 18:01:30,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:30,345 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 413 transitions. [2023-12-24 18:01:30,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 413 transitions. [2023-12-24 18:01:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 18:01:30,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:30,346 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:30,353 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 (28)] Ended with exit code 0 [2023-12-24 18:01:30,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:30,549 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:30,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:30,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2094024511, now seen corresponding path program 1 times [2023-12-24 18:01:30,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:30,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82944177] [2023-12-24 18:01:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:30,550 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 18:01:30,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:30,551 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:30,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 18:01:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:30,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 18:01:30,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:30,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:30,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 24 [2023-12-24 18:01:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:30,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:30,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:30,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82944177] [2023-12-24 18:01:30,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82944177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:30,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:30,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:01:30,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921982266] [2023-12-24 18:01:30,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:30,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:01:30,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:30,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:01:30,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:01:30,968 INFO L87 Difference]: Start difference. First operand 356 states and 413 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:31,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:31,803 INFO L93 Difference]: Finished difference Result 799 states and 914 transitions. [2023-12-24 18:01:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:01:31,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 18:01:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:31,805 INFO L225 Difference]: With dead ends: 799 [2023-12-24 18:01:31,805 INFO L226 Difference]: Without dead ends: 444 [2023-12-24 18:01:31,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:01:31,806 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 80 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:31,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 494 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 18:01:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-24 18:01:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 358. [2023-12-24 18:01:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 301 states have (on average 1.1229235880398671) internal successors, (338), 301 states have internal predecessors, (338), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:01:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2023-12-24 18:01:31,846 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 134 [2023-12-24 18:01:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:31,846 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2023-12-24 18:01:31,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2023-12-24 18:01:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 18:01:31,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:31,847 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:31,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:32,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:32,057 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:32,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1848653588, now seen corresponding path program 1 times [2023-12-24 18:01:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:32,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464267450] [2023-12-24 18:01:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:32,058 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 18:01:32,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:32,059 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:32,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-24 18:01:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:32,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 18:01:32,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:32,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:01:32,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:01:32,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:32,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2023-12-24 18:01:32,576 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 37 treesize of output 39 [2023-12-24 18:01:33,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:33,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 62 [2023-12-24 18:01:33,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:33,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-24 18:01:33,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:33,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-24 18:01:33,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:33,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-24 18:01:34,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:34,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 89 [2023-12-24 18:01:34,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:34,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 87 [2023-12-24 18:01:34,343 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 90 treesize of output 98 [2023-12-24 18:01:34,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:34,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 146 treesize of output 136 [2023-12-24 18:01:35,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:35,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 115 treesize of output 138 [2023-12-24 18:01:35,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:35,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 150 treesize of output 68 [2023-12-24 18:01:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 224 proven. 102 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-24 18:01:35,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:01:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:37,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464267450] [2023-12-24 18:01:37,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464267450] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:01:37,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:01:37,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25] total 28 [2023-12-24 18:01:37,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735552631] [2023-12-24 18:01:37,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:37,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:01:37,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:01:37,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-12-24 18:01:37,457 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:42,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:01:46,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:01:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:47,803 INFO L93 Difference]: Finished difference Result 619 states and 711 transitions. [2023-12-24 18:01:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:01:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 138 [2023-12-24 18:01:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:47,807 INFO L225 Difference]: With dead ends: 619 [2023-12-24 18:01:47,808 INFO L226 Difference]: Without dead ends: 380 [2023-12-24 18:01:47,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:01:47,808 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 129 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:47,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 227 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2023-12-24 18:01:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-24 18:01:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 356. [2023-12-24 18:01:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 299 states have (on average 1.1137123745819397) internal successors, (333), 299 states have internal predecessors, (333), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:01:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 405 transitions. [2023-12-24 18:01:47,847 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 405 transitions. Word has length 138 [2023-12-24 18:01:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:47,848 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 405 transitions. [2023-12-24 18:01:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 405 transitions. [2023-12-24 18:01:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 18:01:47,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:47,849 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:47,868 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 (30)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:48,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:48,056 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:48,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 74574446, now seen corresponding path program 1 times [2023-12-24 18:01:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838130282] [2023-12-24 18:01:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:48,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:48,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:48,059 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:48,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 18:01:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:48,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 18:01:48,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:48,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:01:48,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:01:48,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:01:48,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-24 18:01:48,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:48,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 60 [2023-12-24 18:01:48,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:48,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 63 [2023-12-24 18:01:48,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:48,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 81 [2023-12-24 18:01:48,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:48,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 92 treesize of output 97 [2023-12-24 18:01:49,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:49,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 39 [2023-12-24 18:01:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:49,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:49,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:49,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838130282] [2023-12-24 18:01:49,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838130282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:49,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:49,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-24 18:01:49,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673864550] [2023-12-24 18:01:49,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 18:01:49,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 18:01:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-12-24 18:01:49,377 INFO L87 Difference]: Start difference. First operand 356 states and 405 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:53,497 INFO L93 Difference]: Finished difference Result 784 states and 886 transitions. [2023-12-24 18:01:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 18:01:53,498 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 138 [2023-12-24 18:01:53,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:53,500 INFO L225 Difference]: With dead ends: 784 [2023-12-24 18:01:53,500 INFO L226 Difference]: Without dead ends: 547 [2023-12-24 18:01:53,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=376, Invalid=1030, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 18:01:53,501 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 487 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:53,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 864 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 18:01:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-24 18:01:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 374. [2023-12-24 18:01:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 317 states have (on average 1.1167192429022081) internal successors, (354), 317 states have internal predecessors, (354), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:01:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 426 transitions. [2023-12-24 18:01:53,544 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 426 transitions. Word has length 138 [2023-12-24 18:01:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:53,544 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 426 transitions. [2023-12-24 18:01:53,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 426 transitions. [2023-12-24 18:01:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:01:53,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:53,545 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:53,568 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 (31)] Ended with exit code 0 [2023-12-24 18:01:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:53,754 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:53,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1530137097, now seen corresponding path program 1 times [2023-12-24 18:01:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:53,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876615409] [2023-12-24 18:01:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:53,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:53,757 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:53,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 18:01:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:54,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:01:54,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:54,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 18:01:54,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 18:01:54,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 18:01:54,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:54,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 52 [2023-12-24 18:01:54,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:54,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 18:01:54,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:54,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 18:01:54,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:54,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 71 [2023-12-24 18:01:55,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:55,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 98 [2023-12-24 18:01:56,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:56,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 130 treesize of output 54 [2023-12-24 18:01:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 218 proven. 9 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-24 18:01:56,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:01:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:56,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:56,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876615409] [2023-12-24 18:01:56,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876615409] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:01:56,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:01:56,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 28 [2023-12-24 18:01:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769116893] [2023-12-24 18:01:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:56,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:01:56,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:01:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2023-12-24 18:01:56,919 INFO L87 Difference]: Start difference. First operand 374 states and 426 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:58,140 INFO L93 Difference]: Finished difference Result 877 states and 995 transitions. [2023-12-24 18:01:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 18:01:58,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:01:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:58,142 INFO L225 Difference]: With dead ends: 877 [2023-12-24 18:01:58,142 INFO L226 Difference]: Without dead ends: 622 [2023-12-24 18:01:58,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 18:01:58,143 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 229 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:58,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 606 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 18:01:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-12-24 18:01:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 412. [2023-12-24 18:01:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 355 states have (on average 1.123943661971831) internal successors, (399), 355 states have internal predecessors, (399), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:01:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2023-12-24 18:01:58,198 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 140 [2023-12-24 18:01:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:58,198 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2023-12-24 18:01:58,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2023-12-24 18:01:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:01:58,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:58,199 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:58,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:58,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:58,407 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:58,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash -58210805, now seen corresponding path program 1 times [2023-12-24 18:01:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279653597] [2023-12-24 18:01:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:58,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:58,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:58,409 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:58,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 18:01:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:58,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:01:58,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:58,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 18:01:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:58,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:58,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:58,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279653597] [2023-12-24 18:01:58,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279653597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:58,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:58,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:01:58,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954270184] [2023-12-24 18:01:58,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:58,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:01:58,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:01:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:01:58,648 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:01:59,189 INFO L93 Difference]: Finished difference Result 839 states and 955 transitions. [2023-12-24 18:01:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:01:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:01:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:01:59,191 INFO L225 Difference]: With dead ends: 839 [2023-12-24 18:01:59,191 INFO L226 Difference]: Without dead ends: 546 [2023-12-24 18:01:59,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 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 18:01:59,196 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 95 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:01:59,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 364 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 18:01:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-12-24 18:01:59,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 417. [2023-12-24 18:01:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 360 states have (on average 1.1277777777777778) internal successors, (406), 360 states have internal predecessors, (406), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:01:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 478 transitions. [2023-12-24 18:01:59,237 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 478 transitions. Word has length 140 [2023-12-24 18:01:59,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:01:59,237 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 478 transitions. [2023-12-24 18:01:59,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:01:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 478 transitions. [2023-12-24 18:01:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:01:59,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:01:59,238 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:59,246 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 (33)] Forceful destruction successful, exit code 0 [2023-12-24 18:01:59,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:01:59,445 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:01:59,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:01:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1069328055, now seen corresponding path program 1 times [2023-12-24 18:01:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:01:59,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468130037] [2023-12-24 18:01:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:01:59,445 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 18:01:59,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:01:59,446 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:01:59,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 18:01:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:01:59,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:01:59,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:01:59,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:01:59,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2023-12-24 18:01:59,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:01:59,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 15 [2023-12-24 18:01:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:01:59,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:01:59,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:01:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468130037] [2023-12-24 18:01:59,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468130037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:01:59,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:01:59,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:01:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926058679] [2023-12-24 18:01:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:01:59,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:01:59,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:01:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:01:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:01:59,837 INFO L87 Difference]: Start difference. First operand 417 states and 478 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:00,610 INFO L93 Difference]: Finished difference Result 853 states and 976 transitions. [2023-12-24 18:02:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:02:00,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:02:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:00,612 INFO L225 Difference]: With dead ends: 853 [2023-12-24 18:02:00,612 INFO L226 Difference]: Without dead ends: 555 [2023-12-24 18:02:00,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:02:00,613 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 99 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:00,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 486 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 18:02:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-24 18:02:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 446. [2023-12-24 18:02:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 389 states have (on average 1.1233933161953729) internal successors, (437), 389 states have internal predecessors, (437), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 509 transitions. [2023-12-24 18:02:00,657 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 509 transitions. Word has length 140 [2023-12-24 18:02:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:00,657 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 509 transitions. [2023-12-24 18:02:00,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 509 transitions. [2023-12-24 18:02:00,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:02:00,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:00,658 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:00,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:00,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:00,866 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:00,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash -616722637, now seen corresponding path program 1 times [2023-12-24 18:02:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:00,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249492435] [2023-12-24 18:02:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:00,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:00,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:00,868 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 18:02:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:01,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-24 18:02:01,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:01,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:02:01,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:01,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:01,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:01,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2023-12-24 18:02:01,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:01,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 54 [2023-12-24 18:02:01,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:01,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 54 [2023-12-24 18:02:01,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:01,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 72 [2023-12-24 18:02:01,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:01,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 98 [2023-12-24 18:02:02,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:02,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 135 treesize of output 53 [2023-12-24 18:02:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 9 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-12-24 18:02:02,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:02:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:03,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249492435] [2023-12-24 18:02:03,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249492435] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:02:03,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:02:03,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2023-12-24 18:02:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826049740] [2023-12-24 18:02:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 18:02:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 18:02:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:02:03,751 INFO L87 Difference]: Start difference. First operand 446 states and 509 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:05,391 INFO L93 Difference]: Finished difference Result 1014 states and 1146 transitions. [2023-12-24 18:02:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 18:02:05,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:02:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:05,394 INFO L225 Difference]: With dead ends: 1014 [2023-12-24 18:02:05,394 INFO L226 Difference]: Without dead ends: 687 [2023-12-24 18:02:05,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 18:02:05,395 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 217 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:05,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 919 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 18:02:05,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-24 18:02:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 463. [2023-12-24 18:02:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 406 states have (on average 1.125615763546798) internal successors, (457), 406 states have internal predecessors, (457), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 529 transitions. [2023-12-24 18:02:05,436 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 529 transitions. Word has length 140 [2023-12-24 18:02:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:05,437 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 529 transitions. [2023-12-24 18:02:05,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 529 transitions. [2023-12-24 18:02:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:02:05,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:05,437 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:05,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:05,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:05,647 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:05,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash -713846201, now seen corresponding path program 1 times [2023-12-24 18:02:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:05,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880561172] [2023-12-24 18:02:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:05,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:05,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:05,649 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:05,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-24 18:02:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:05,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:02:05,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:05,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:02:06,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-24 18:02:06,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:06,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 16 [2023-12-24 18:02:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:06,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:02:06,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880561172] [2023-12-24 18:02:06,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880561172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:02:06,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:02:06,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:02:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082144186] [2023-12-24 18:02:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:06,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:02:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:02:06,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:02:06,108 INFO L87 Difference]: Start difference. First operand 463 states and 529 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:06,703 INFO L93 Difference]: Finished difference Result 917 states and 1042 transitions. [2023-12-24 18:02:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:02:06,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:02:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:06,706 INFO L225 Difference]: With dead ends: 917 [2023-12-24 18:02:06,706 INFO L226 Difference]: Without dead ends: 573 [2023-12-24 18:02:06,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:02:06,706 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 77 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:06,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 423 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:02:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-24 18:02:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 444. [2023-12-24 18:02:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 387 states have (on average 1.1136950904392764) internal successors, (431), 387 states have internal predecessors, (431), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 503 transitions. [2023-12-24 18:02:06,748 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 503 transitions. Word has length 140 [2023-12-24 18:02:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:06,748 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 503 transitions. [2023-12-24 18:02:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 503 transitions. [2023-12-24 18:02:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:02:06,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:06,749 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:06,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:06,957 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:06,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash 981655943, now seen corresponding path program 1 times [2023-12-24 18:02:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782896945] [2023-12-24 18:02:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:06,958 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 18:02:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:06,959 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:06,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 18:02:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:07,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 18:02:07,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:07,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 18:02:07,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 18:02:07,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 18:02:07,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:07,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 52 [2023-12-24 18:02:07,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:07,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 18:02:07,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:07,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 18:02:07,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:07,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 71 [2023-12-24 18:02:07,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:07,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 91 [2023-12-24 18:02:08,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:08,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 83 treesize of output 31 [2023-12-24 18:02:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 218 proven. 9 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-24 18:02:08,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:02:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:08,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:08,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782896945] [2023-12-24 18:02:08,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782896945] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:02:08,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:02:08,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-12-24 18:02:08,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146441319] [2023-12-24 18:02:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:02:08,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:02:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:02:08,730 INFO L87 Difference]: Start difference. First operand 444 states and 503 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:09,362 INFO L93 Difference]: Finished difference Result 960 states and 1079 transitions. [2023-12-24 18:02:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:02:09,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:02:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:09,364 INFO L225 Difference]: With dead ends: 960 [2023-12-24 18:02:09,364 INFO L226 Difference]: Without dead ends: 635 [2023-12-24 18:02:09,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:02:09,365 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 144 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:09,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 456 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:02:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-12-24 18:02:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 457. [2023-12-24 18:02:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 400 states have (on average 1.1125) internal successors, (445), 400 states have internal predecessors, (445), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 517 transitions. [2023-12-24 18:02:09,409 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 517 transitions. Word has length 140 [2023-12-24 18:02:09,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:09,409 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 517 transitions. [2023-12-24 18:02:09,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 517 transitions. [2023-12-24 18:02:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:02:09,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:09,410 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:09,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:09,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:09,618 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:09,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:09,618 INFO L85 PathProgramCache]: Analyzing trace with hash 154397683, now seen corresponding path program 1 times [2023-12-24 18:02:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:09,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122263605] [2023-12-24 18:02:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:09,619 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 18:02:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:09,620 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:09,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 18:02:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:09,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:02:09,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:09,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 18:02:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:09,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:02:09,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122263605] [2023-12-24 18:02:09,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122263605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:02:09,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:02:09,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:02:09,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788013556] [2023-12-24 18:02:09,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:09,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:02:09,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:09,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:02:09,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:02:09,902 INFO L87 Difference]: Start difference. First operand 457 states and 517 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:10,415 INFO L93 Difference]: Finished difference Result 906 states and 1021 transitions. [2023-12-24 18:02:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:02:10,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:02:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:10,418 INFO L225 Difference]: With dead ends: 906 [2023-12-24 18:02:10,418 INFO L226 Difference]: Without dead ends: 568 [2023-12-24 18:02:10,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 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 18:02:10,419 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 69 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:10,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 359 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 18:02:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-24 18:02:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 460. [2023-12-24 18:02:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 403 states have (on average 1.1091811414392059) internal successors, (447), 403 states have internal predecessors, (447), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 519 transitions. [2023-12-24 18:02:10,481 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 519 transitions. Word has length 140 [2023-12-24 18:02:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:10,481 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 519 transitions. [2023-12-24 18:02:10,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 519 transitions. [2023-12-24 18:02:10,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 18:02:10,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:10,482 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:10,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:10,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:10,689 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:10,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash 855997557, now seen corresponding path program 1 times [2023-12-24 18:02:10,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:10,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095308314] [2023-12-24 18:02:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:10,690 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 18:02:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:10,691 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:10,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-24 18:02:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:11,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 18:02:11,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:11,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 18:02:11,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:11,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:11,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:11,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2023-12-24 18:02:11,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:11,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 54 [2023-12-24 18:02:11,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:11,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 54 [2023-12-24 18:02:11,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:11,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 72 [2023-12-24 18:02:11,544 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:11,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 91 [2023-12-24 18:02:12,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:12,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 37 [2023-12-24 18:02:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 9 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-12-24 18:02:12,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:02:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:12,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:12,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095308314] [2023-12-24 18:02:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095308314] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:02:12,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:02:12,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-12-24 18:02:12,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035409012] [2023-12-24 18:02:12,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:12,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:02:12,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:02:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:02:12,267 INFO L87 Difference]: Start difference. First operand 460 states and 519 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:12,864 INFO L93 Difference]: Finished difference Result 915 states and 1026 transitions. [2023-12-24 18:02:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:02:12,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 18:02:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:12,866 INFO L225 Difference]: With dead ends: 915 [2023-12-24 18:02:12,866 INFO L226 Difference]: Without dead ends: 574 [2023-12-24 18:02:12,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-12-24 18:02:12,867 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 88 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:12,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 614 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:02:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-12-24 18:02:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 460. [2023-12-24 18:02:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 403 states have (on average 1.1066997518610422) internal successors, (446), 403 states have internal predecessors, (446), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 518 transitions. [2023-12-24 18:02:12,909 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 518 transitions. Word has length 140 [2023-12-24 18:02:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:12,910 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 518 transitions. [2023-12-24 18:02:12,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 518 transitions. [2023-12-24 18:02:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 18:02:12,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:12,911 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:12,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:13,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:13,118 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:13,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1381396082, now seen corresponding path program 1 times [2023-12-24 18:02:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:13,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613772748] [2023-12-24 18:02:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:13,119 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 18:02:13,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:13,120 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:13,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 18:02:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:13,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 18:02:13,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:13,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:02:13,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-12-24 18:02:13,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:02:13,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 32 [2023-12-24 18:02:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:14,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:02:14,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613772748] [2023-12-24 18:02:14,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613772748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:02:14,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:02:14,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-24 18:02:14,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240201175] [2023-12-24 18:02:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:14,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 18:02:14,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 18:02:14,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:02:14,017 INFO L87 Difference]: Start difference. First operand 460 states and 518 transitions. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:16,759 INFO L93 Difference]: Finished difference Result 1042 states and 1158 transitions. [2023-12-24 18:02:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 18:02:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 142 [2023-12-24 18:02:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:16,762 INFO L225 Difference]: With dead ends: 1042 [2023-12-24 18:02:16,762 INFO L226 Difference]: Without dead ends: 701 [2023-12-24 18:02:16,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 18:02:16,763 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 357 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:16,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1570 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-24 18:02:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-12-24 18:02:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 491. [2023-12-24 18:02:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 434 states have (on average 1.1059907834101383) internal successors, (480), 434 states have internal predecessors, (480), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 552 transitions. [2023-12-24 18:02:16,809 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 552 transitions. Word has length 142 [2023-12-24 18:02:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:16,809 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 552 transitions. [2023-12-24 18:02:16,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 552 transitions. [2023-12-24 18:02:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 18:02:16,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:16,810 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:16,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:17,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:17,021 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:17,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1902453964, now seen corresponding path program 1 times [2023-12-24 18:02:17,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:17,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269885463] [2023-12-24 18:02:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:17,022 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 18:02:17,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:17,023 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:17,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 18:02:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:17,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:02:17,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:17,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-24 18:02:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:17,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:02:17,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:17,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269885463] [2023-12-24 18:02:17,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269885463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:02:17,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:02:17,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:02:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519200381] [2023-12-24 18:02:17,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:17,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:02:17,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:02:17,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:02:17,294 INFO L87 Difference]: Start difference. First operand 491 states and 552 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:17,810 INFO L93 Difference]: Finished difference Result 956 states and 1070 transitions. [2023-12-24 18:02:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:02:17,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 142 [2023-12-24 18:02:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:17,812 INFO L225 Difference]: With dead ends: 956 [2023-12-24 18:02:17,813 INFO L226 Difference]: Without dead ends: 584 [2023-12-24 18:02:17,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:02:17,813 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 92 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:17,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 400 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 18:02:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-24 18:02:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 491. [2023-12-24 18:02:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 434 states have (on average 1.1013824884792627) internal successors, (478), 434 states have internal predecessors, (478), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 550 transitions. [2023-12-24 18:02:17,864 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 550 transitions. Word has length 142 [2023-12-24 18:02:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:17,864 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 550 transitions. [2023-12-24 18:02:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 550 transitions. [2023-12-24 18:02:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 18:02:17,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:17,865 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:17,880 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 (41)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:18,073 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:18,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1453782640, now seen corresponding path program 1 times [2023-12-24 18:02:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269366653] [2023-12-24 18:02:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:18,074 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 18:02:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:18,075 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:18,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-24 18:02:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:18,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:02:18,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:18,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-24 18:02:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:18,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:02:18,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:18,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269366653] [2023-12-24 18:02:18,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269366653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:02:18,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:02:18,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:02:18,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512144968] [2023-12-24 18:02:18,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:18,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:02:18,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:18,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:02:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:02:18,370 INFO L87 Difference]: Start difference. First operand 491 states and 550 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:19,085 INFO L93 Difference]: Finished difference Result 905 states and 1012 transitions. [2023-12-24 18:02:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:02:19,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 142 [2023-12-24 18:02:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:19,087 INFO L225 Difference]: With dead ends: 905 [2023-12-24 18:02:19,087 INFO L226 Difference]: Without dead ends: 533 [2023-12-24 18:02:19,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:02:19,088 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 74 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:19,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 408 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 18:02:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-12-24 18:02:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 461. [2023-12-24 18:02:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 404 states have (on average 1.0965346534653466) internal successors, (443), 404 states have internal predecessors, (443), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 515 transitions. [2023-12-24 18:02:19,133 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 515 transitions. Word has length 142 [2023-12-24 18:02:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:19,133 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 515 transitions. [2023-12-24 18:02:19,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 515 transitions. [2023-12-24 18:02:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 18:02:19,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:19,134 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:19,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:19,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:19,342 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:19,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash -152647282, now seen corresponding path program 1 times [2023-12-24 18:02:19,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:19,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972999942] [2023-12-24 18:02:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:19,343 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 18:02:19,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:19,344 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:19,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-24 18:02:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:19,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 18:02:19,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:19,608 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 14 treesize of output 10 [2023-12-24 18:02:19,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 18:02:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 18:02:19,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:02:19,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972999942] [2023-12-24 18:02:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972999942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:02:19,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:02:19,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 18:02:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492497429] [2023-12-24 18:02:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:02:19,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 18:02:19,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:19,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 18:02:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:02:19,738 INFO L87 Difference]: Start difference. First operand 461 states and 515 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:20,738 INFO L93 Difference]: Finished difference Result 1029 states and 1156 transitions. [2023-12-24 18:02:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 18:02:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 142 [2023-12-24 18:02:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:20,740 INFO L225 Difference]: With dead ends: 1029 [2023-12-24 18:02:20,740 INFO L226 Difference]: Without dead ends: 687 [2023-12-24 18:02:20,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2023-12-24 18:02:20,741 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 150 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:20,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1741 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 18:02:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-24 18:02:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 460. [2023-12-24 18:02:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 403 states have (on average 1.096774193548387) internal successors, (442), 403 states have internal predecessors, (442), 36 states have call successors, (36), 20 states have call predecessors, (36), 20 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:02:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 514 transitions. [2023-12-24 18:02:20,787 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 514 transitions. Word has length 142 [2023-12-24 18:02:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:20,787 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 514 transitions. [2023-12-24 18:02:20,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 18:02:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 514 transitions. [2023-12-24 18:02:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-24 18:02:20,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:02:20,789 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 18:02:20,800 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 (43)] Forceful destruction successful, exit code 0 [2023-12-24 18:02:20,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:20,995 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:02:20,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:02:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash -482035344, now seen corresponding path program 1 times [2023-12-24 18:02:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:02:20,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442862948] [2023-12-24 18:02:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:02:20,996 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 18:02:20,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:02:20,997 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:02:21,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-24 18:02:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:02:21,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 18:02:21,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:02:21,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:02:21,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:21,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:21,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:21,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:02:21,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 18:02:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 788 proven. 24 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2023-12-24 18:02:21,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:02:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 108 proven. 24 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2023-12-24 18:02:21,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:02:21,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442862948] [2023-12-24 18:02:21,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442862948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 18:02:21,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:02:21,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-24 18:02:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107033080] [2023-12-24 18:02:21,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:02:21,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:02:21,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:02:21,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:02:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:02:21,913 INFO L87 Difference]: Start difference. First operand 460 states and 514 transitions. Second operand has 11 states, 9 states have (on average 11.11111111111111) internal successors, (100), 11 states have internal predecessors, (100), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 2 states have call predecessors, (33), 4 states have call successors, (33) [2023-12-24 18:02:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:02:22,511 INFO L93 Difference]: Finished difference Result 689 states and 764 transitions. [2023-12-24 18:02:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 18:02:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.11111111111111) internal successors, (100), 11 states have internal predecessors, (100), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 2 states have call predecessors, (33), 4 states have call successors, (33) Word has length 241 [2023-12-24 18:02:22,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:02:22,512 INFO L225 Difference]: With dead ends: 689 [2023-12-24 18:02:22,512 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 18:02:22,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 470 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-24 18:02:22,513 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 183 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:02:22,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 194 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:02:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 18:02:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 18:02:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 18:02:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 18:02:22,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2023-12-24 18:02:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:02:22,514 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 18:02:22,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.11111111111111) internal successors, (100), 11 states have internal predecessors, (100), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 2 states have call predecessors, (33), 4 states have call successors, (33) [2023-12-24 18:02:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 18:02:22,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 18:02:22,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 18:02:22,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-12-24 18:02:22,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:02:22,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 18:13:38,378 WARN L293 SmtUtils]: Spent 11.26m on a formula simplification. DAG size of input: 252 DAG size of output: 356 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 18:14:20,279 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-19-6-18-6-17-8-16-8-13-13-12-13-11-13-10-13-9-13-7-13-6-13-5-13-5-13-5-13-5-13-4-13-2-13-2-13-1 term,while PolyPacSimplificationTermWalker was simplifying 12 xjuncts wrt. a ∧-50-13-18-9-17-9-16-9-13-13-12-13-11-13-10-13-9-13-7-13-6-13-5-13-5-13-5-13-5-13-4-13-2-13-2-13-1 context. [2023-12-24 18:14:20,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 18:14:20,283 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 18:14:20,284 INFO L158 Benchmark]: Toolchain (without parser) took 870449.16ms. Allocated memory was 293.6MB in the beginning and 961.5MB in the end (delta: 667.9MB). Free memory was 247.8MB in the beginning and 389.9MB in the end (delta: -142.1MB). Peak memory consumption was 526.5MB. Max. memory is 8.0GB. [2023-12-24 18:14:20,284 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 18:14:20,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.51ms. Allocated memory is still 293.6MB. Free memory was 247.5MB in the beginning and 230.0MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-24 18:14:20,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.07ms. Allocated memory is still 293.6MB. Free memory was 230.0MB in the beginning and 226.5MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 18:14:20,284 INFO L158 Benchmark]: Boogie Preprocessor took 50.40ms. Allocated memory is still 293.6MB. Free memory was 226.5MB in the beginning and 221.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 18:14:20,284 INFO L158 Benchmark]: RCFGBuilder took 571.15ms. Allocated memory is still 293.6MB. Free memory was 221.6MB in the beginning and 250.4MB in the end (delta: -28.8MB). Peak memory consumption was 36.3MB. Max. memory is 8.0GB. [2023-12-24 18:14:20,285 INFO L158 Benchmark]: TraceAbstraction took 869510.53ms. Allocated memory was 293.6MB in the beginning and 961.5MB in the end (delta: 667.9MB). Free memory was 249.4MB in the beginning and 389.9MB in the end (delta: -140.6MB). Peak memory consumption was 526.9MB. Max. memory is 8.0GB. [2023-12-24 18:14:20,287 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 18:14:20,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 255.51ms. Allocated memory is still 293.6MB. Free memory was 247.5MB in the beginning and 230.0MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.07ms. Allocated memory is still 293.6MB. Free memory was 230.0MB in the beginning and 226.5MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.40ms. Allocated memory is still 293.6MB. Free memory was 226.5MB in the beginning and 221.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 571.15ms. Allocated memory is still 293.6MB. Free memory was 221.6MB in the beginning and 250.4MB in the end (delta: -28.8MB). Peak memory consumption was 36.3MB. Max. memory is 8.0GB. * TraceAbstraction took 869510.53ms. Allocated memory was 293.6MB in the beginning and 961.5MB in the end (delta: 667.9MB). Free memory was 249.4MB in the beginning and 389.9MB in the end (delta: -140.6MB). Peak memory consumption was 526.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-4-6-2-24-2-22-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-22-2-24-2-22-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown