/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 13:36:30,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 13:36:31,013 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 13:36:31,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 13:36:31,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 13:36:31,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 13:36:31,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 13:36:31,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 13:36:31,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 13:36:31,045 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 13:36:31,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 13:36:31,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 13:36:31,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 13:36:31,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 13:36:31,047 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 13:36:31,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 13:36:31,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 13:36:31,047 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 13:36:31,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 13:36:31,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 13:36:31,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 13:36:31,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 13:36:31,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 13:36:31,049 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 13:36:31,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 13:36:31,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 13:36:31,049 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 13:36:31,049 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 13:36:31,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 13:36:31,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 13:36:31,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 13:36:31,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 13:36:31,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 13:36:31,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 13:36:31,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 13:36:31,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 13:36:31,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 13:36:31,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 13:36:31,051 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 13:36:31,051 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 13:36:31,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 13:36:31,052 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 13:36:31,052 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 13:36:31,052 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 13:36:31,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 13:36:31,052 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 13:36:31,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 13:36:31,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 13:36:31,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 13:36:31,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 13:36:31,267 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 13:36:31,267 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 13:36:31,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-56.i [2023-12-24 13:36:32,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 13:36:32,403 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 13:36:32,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-56.i [2023-12-24 13:36:32,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9900c4671/f57e2c1d1a4c46a6931e05134286fdd4/FLAG60873a873 [2023-12-24 13:36:32,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9900c4671/f57e2c1d1a4c46a6931e05134286fdd4 [2023-12-24 13:36:32,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 13:36:32,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 13:36:32,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 13:36:32,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 13:36:32,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 13:36:32,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c99a9ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32, skipping insertion in model container [2023-12-24 13:36:32,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,456 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 13:36:32,563 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-56.i[916,929] [2023-12-24 13:36:32,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 13:36:32,616 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 13:36:32,623 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-56.i[916,929] [2023-12-24 13:36:32,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 13:36:32,679 INFO L206 MainTranslator]: Completed translation [2023-12-24 13:36:32,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32 WrapperNode [2023-12-24 13:36:32,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 13:36:32,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 13:36:32,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 13:36:32,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 13:36:32,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,728 INFO L138 Inliner]: procedures = 30, calls = 181, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 546 [2023-12-24 13:36:32,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 13:36:32,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 13:36:32,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 13:36:32,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 13:36:32,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,765 INFO L175 MemorySlicer]: Split 147 memory accesses to 5 slices as follows [2, 41, 11, 16, 77]. 52 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 5, 2, 1, 6]. The 18 writes are split as follows [0, 8, 2, 1, 7]. [2023-12-24 13:36:32,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 13:36:32,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 13:36:32,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 13:36:32,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 13:36:32,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (1/1) ... [2023-12-24 13:36:32,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 13:36:32,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 13:36:32,847 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 13:36:32,867 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 13:36:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 13:36:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 13:36:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 13:36:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 13:36:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 13:36:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 13:36:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 13:36:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 13:36:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 13:36:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 13:36:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 13:36:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 13:36:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 13:36:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 13:36:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 13:36:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 13:36:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 13:36:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 13:36:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 13:36:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 13:36:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 13:36:32,987 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 13:36:32,988 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 13:36:33,464 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 13:36:33,503 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 13:36:33,504 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 13:36:33,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:36:33 BoogieIcfgContainer [2023-12-24 13:36:33,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 13:36:33,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 13:36:33,506 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 13:36:33,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 13:36:33,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 01:36:32" (1/3) ... [2023-12-24 13:36:33,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc8e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:36:33, skipping insertion in model container [2023-12-24 13:36:33,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 01:36:32" (2/3) ... [2023-12-24 13:36:33,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc8e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 01:36:33, skipping insertion in model container [2023-12-24 13:36:33,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 01:36:33" (3/3) ... [2023-12-24 13:36:33,510 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-56.i [2023-12-24 13:36:33,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 13:36:33,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 13:36:33,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 13:36:33,560 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;@5ccfa736, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 13:36:33,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 13:36:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 13:36:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 13:36:33,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:33,574 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:33,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:33,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2053883559, now seen corresponding path program 1 times [2023-12-24 13:36:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823784564] [2023-12-24 13:36:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:33,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:33,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:33,590 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 13:36:33,603 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 13:36:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:33,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 13:36:33,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 13:36:33,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:36:33,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:33,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823784564] [2023-12-24 13:36:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823784564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:36:33,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:36:33,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 13:36:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646973716] [2023-12-24 13:36:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:36:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 13:36:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:36:33,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 13:36:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 13:36:33,904 INFO L87 Difference]: Start difference. First operand has 111 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 13:36:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:36:33,956 INFO L93 Difference]: Finished difference Result 219 states and 353 transitions. [2023-12-24 13:36:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 13:36:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2023-12-24 13:36:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:36:33,965 INFO L225 Difference]: With dead ends: 219 [2023-12-24 13:36:33,965 INFO L226 Difference]: Without dead ends: 109 [2023-12-24 13:36:33,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 13:36:33,970 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:36:33,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:36:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-24 13:36:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-24 13:36:34,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 13:36:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 163 transitions. [2023-12-24 13:36:34,012 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 163 transitions. Word has length 144 [2023-12-24 13:36:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:36:34,013 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 163 transitions. [2023-12-24 13:36:34,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 13:36:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 163 transitions. [2023-12-24 13:36:34,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 13:36:34,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:34,019 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:34,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 13:36:34,220 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 13:36:34,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:34,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -929248467, now seen corresponding path program 1 times [2023-12-24 13:36:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289570016] [2023-12-24 13:36:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:34,224 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 13:36:34,225 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 13:36:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:34,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 13:36:34,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:36:34,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:36:34,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:34,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289570016] [2023-12-24 13:36:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289570016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:36:34,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:36:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 13:36:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395316856] [2023-12-24 13:36:34,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:36:34,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 13:36:34,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:36:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 13:36:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:36:34,460 INFO L87 Difference]: Start difference. First operand 109 states and 163 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:36:34,527 INFO L93 Difference]: Finished difference Result 218 states and 327 transitions. [2023-12-24 13:36:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 13:36:34,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2023-12-24 13:36:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:36:34,528 INFO L225 Difference]: With dead ends: 218 [2023-12-24 13:36:34,529 INFO L226 Difference]: Without dead ends: 110 [2023-12-24 13:36:34,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:36:34,530 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:36:34,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:36:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-24 13:36:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-24 13:36:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 89 states have (on average 1.4157303370786516) internal successors, (126), 89 states have internal predecessors, (126), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 13:36:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 164 transitions. [2023-12-24 13:36:34,538 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 164 transitions. Word has length 144 [2023-12-24 13:36:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:36:34,539 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 164 transitions. [2023-12-24 13:36:34,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 164 transitions. [2023-12-24 13:36:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 13:36:34,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:34,541 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:34,552 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 13:36:34,749 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 13:36:34,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:34,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1371574123, now seen corresponding path program 1 times [2023-12-24 13:36:34,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:34,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880812837] [2023-12-24 13:36:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:34,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:34,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:34,752 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 13:36:34,753 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 13:36:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:34,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 13:36:34,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:34,988 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 13:36:35,647 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 21 treesize of output 17 [2023-12-24 13:36:35,721 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 28 treesize of output 16 [2023-12-24 13:36:35,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2023-12-24 13:36:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:36:35,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:36:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:36:36,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:36,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880812837] [2023-12-24 13:36:36,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880812837] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:36:36,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:36:36,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 25 [2023-12-24 13:36:36,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750602241] [2023-12-24 13:36:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:36:36,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:36:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:36:36,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:36:36,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2023-12-24 13:36:36,075 INFO L87 Difference]: Start difference. First operand 110 states and 164 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:36,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:36:36,638 INFO L93 Difference]: Finished difference Result 346 states and 516 transitions. [2023-12-24 13:36:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:36:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2023-12-24 13:36:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:36:36,640 INFO L225 Difference]: With dead ends: 346 [2023-12-24 13:36:36,640 INFO L226 Difference]: Without dead ends: 237 [2023-12-24 13:36:36,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2023-12-24 13:36:36,642 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 293 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:36:36,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1164 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:36:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-24 13:36:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 190. [2023-12-24 13:36:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 159 states have (on average 1.4276729559748427) internal successors, (227), 160 states have internal predecessors, (227), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-24 13:36:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 283 transitions. [2023-12-24 13:36:36,653 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 283 transitions. Word has length 144 [2023-12-24 13:36:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:36:36,654 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 283 transitions. [2023-12-24 13:36:36,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 283 transitions. [2023-12-24 13:36:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 13:36:36,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:36,655 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:36,661 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 13:36:36,864 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 13:36:36,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:36,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1572427499, now seen corresponding path program 1 times [2023-12-24 13:36:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:36,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334637838] [2023-12-24 13:36:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:36,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:36,867 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 13:36:36,869 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 13:36:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:37,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 13:36:37,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:37,077 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 13:36:37,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 13:36:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:36:37,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:36:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:36:37,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:37,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334637838] [2023-12-24 13:36:37,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334637838] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:36:37,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:36:37,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-24 13:36:37,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179888358] [2023-12-24 13:36:37,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:36:37,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:36:37,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:36:37,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:36:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:36:37,771 INFO L87 Difference]: Start difference. First operand 190 states and 283 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:36:37,841 INFO L93 Difference]: Finished difference Result 446 states and 667 transitions. [2023-12-24 13:36:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:36:37,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 13:36:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:36:37,847 INFO L225 Difference]: With dead ends: 446 [2023-12-24 13:36:37,847 INFO L226 Difference]: Without dead ends: 257 [2023-12-24 13:36:37,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-12-24 13:36:37,849 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 200 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:36:37,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 463 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:36:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-24 13:36:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 201. [2023-12-24 13:36:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 170 states have (on average 1.4352941176470588) internal successors, (244), 171 states have internal predecessors, (244), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-24 13:36:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 300 transitions. [2023-12-24 13:36:37,872 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 300 transitions. Word has length 145 [2023-12-24 13:36:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:36:37,872 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 300 transitions. [2023-12-24 13:36:37,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 300 transitions. [2023-12-24 13:36:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-24 13:36:37,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:37,874 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:37,879 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 13:36:38,078 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 13:36:38,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:38,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash 138666561, now seen corresponding path program 1 times [2023-12-24 13:36:38,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817915513] [2023-12-24 13:36:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:38,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:38,081 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 13:36:38,108 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 13:36:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:38,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 13:36:38,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:38,293 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 13:36:38,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-24 13:36:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:36:38,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:36:38,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817915513] [2023-12-24 13:36:38,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817915513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:36:38,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:36:38,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:36:38,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646320209] [2023-12-24 13:36:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:36:38,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:36:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:36:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:36:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:36:38,515 INFO L87 Difference]: Start difference. First operand 201 states and 300 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:40,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:36:40,415 INFO L93 Difference]: Finished difference Result 794 states and 1184 transitions. [2023-12-24 13:36:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:36:40,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 145 [2023-12-24 13:36:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:36:40,418 INFO L225 Difference]: With dead ends: 794 [2023-12-24 13:36:40,418 INFO L226 Difference]: Without dead ends: 594 [2023-12-24 13:36:40,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:36:40,420 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 508 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:36:40,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 836 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 13:36:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-24 13:36:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 412. [2023-12-24 13:36:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 351 states have (on average 1.4415954415954415) internal successors, (506), 353 states have internal predecessors, (506), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 13:36:40,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 618 transitions. [2023-12-24 13:36:40,440 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 618 transitions. Word has length 145 [2023-12-24 13:36:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:36:40,440 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 618 transitions. [2023-12-24 13:36:40,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 618 transitions. [2023-12-24 13:36:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:36:40,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:40,441 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:40,449 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 13:36:40,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:40,647 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:40,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1378675919, now seen corresponding path program 1 times [2023-12-24 13:36:40,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:40,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102492264] [2023-12-24 13:36:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:40,648 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 13:36:40,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:40,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:36:40,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 13:36:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:40,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-24 13:36:40,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:41,404 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 29 treesize of output 17 [2023-12-24 13:36:41,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:36:41,580 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 29 treesize of output 13 [2023-12-24 13:36:41,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:41,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 13:36:42,375 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 61 treesize of output 45 [2023-12-24 13:36:44,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:44,062 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 126 treesize of output 98 [2023-12-24 13:36:44,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2023-12-24 13:36:45,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:45,212 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 148 treesize of output 74 [2023-12-24 13:36:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 155 proven. 373 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 13:36:45,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:36:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:36:47,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:47,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102492264] [2023-12-24 13:36:47,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102492264] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:36:47,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:36:47,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [40] total 51 [2023-12-24 13:36:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140359255] [2023-12-24 13:36:47,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:36:47,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:36:47,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:36:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:36:47,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2294, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 13:36:47,170 INFO L87 Difference]: Start difference. First operand 412 states and 618 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:36:50,642 INFO L93 Difference]: Finished difference Result 1250 states and 1867 transitions. [2023-12-24 13:36:50,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 13:36:50,643 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:36:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:36:50,646 INFO L225 Difference]: With dead ends: 1250 [2023-12-24 13:36:50,646 INFO L226 Difference]: Without dead ends: 839 [2023-12-24 13:36:50,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=384, Invalid=3156, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 13:36:50,648 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 699 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:36:50,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1865 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 13:36:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-24 13:36:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 470. [2023-12-24 13:36:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 409 states have (on average 1.4645476772616137) internal successors, (599), 411 states have internal predecessors, (599), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 13:36:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 711 transitions. [2023-12-24 13:36:50,673 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 711 transitions. Word has length 146 [2023-12-24 13:36:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:36:50,674 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 711 transitions. [2023-12-24 13:36:50,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 711 transitions. [2023-12-24 13:36:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:36:50,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:50,675 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:50,683 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 (7)] Ended with exit code 0 [2023-12-24 13:36:50,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:50,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:50,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:50,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1120510481, now seen corresponding path program 1 times [2023-12-24 13:36:50,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:50,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033449357] [2023-12-24 13:36:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:50,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:50,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:50,883 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 13:36:50,884 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 13:36:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:51,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 13:36:51,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:51,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:36:51,175 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 13:36:51,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:51,287 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 13:36:51,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:51,421 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 50 treesize of output 31 [2023-12-24 13:36:51,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:51,462 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 51 treesize of output 21 [2023-12-24 13:36:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 286 proven. 15 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-12-24 13:36:51,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:36:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:36:51,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033449357] [2023-12-24 13:36:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033449357] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:36:51,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:36:51,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2023-12-24 13:36:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196685405] [2023-12-24 13:36:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:36:51,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:36:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:36:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:36:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-24 13:36:51,685 INFO L87 Difference]: Start difference. First operand 470 states and 711 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:51,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:36:51,925 INFO L93 Difference]: Finished difference Result 1372 states and 2060 transitions. [2023-12-24 13:36:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:36:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:36:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:36:51,929 INFO L225 Difference]: With dead ends: 1372 [2023-12-24 13:36:51,929 INFO L226 Difference]: Without dead ends: 903 [2023-12-24 13:36:51,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:36:51,931 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 198 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:36:51,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 503 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:36:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-12-24 13:36:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 785. [2023-12-24 13:36:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 676 states have (on average 1.4349112426035502) internal successors, (970), 682 states have internal predecessors, (970), 100 states have call successors, (100), 8 states have call predecessors, (100), 8 states have return successors, (100), 94 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 13:36:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1170 transitions. [2023-12-24 13:36:51,981 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1170 transitions. Word has length 146 [2023-12-24 13:36:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:36:51,982 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1170 transitions. [2023-12-24 13:36:51,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:36:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1170 transitions. [2023-12-24 13:36:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:36:51,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:36:51,984 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:36:51,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-24 13:36:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:52,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:36:52,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:36:52,194 INFO L85 PathProgramCache]: Analyzing trace with hash -561027469, now seen corresponding path program 1 times [2023-12-24 13:36:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:36:52,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628281008] [2023-12-24 13:36:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:52,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:36:52,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:36:52,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:36:52,196 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 (9)] Waiting until timeout for monitored process [2023-12-24 13:36:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:52,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 13:36:52,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:52,484 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 13:36:52,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:36:53,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:36:54,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:54,255 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 118 treesize of output 78 [2023-12-24 13:36:54,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:54,428 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 90 treesize of output 68 [2023-12-24 13:36:54,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:54,659 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 81 treesize of output 45 [2023-12-24 13:36:54,803 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 45 treesize of output 33 [2023-12-24 13:36:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 464 proven. 42 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-24 13:36:55,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:36:56,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:36:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628281008] [2023-12-24 13:36:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628281008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:36:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1367701685] [2023-12-24 13:36:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:36:56,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:36:56,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:36:56,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:36:56,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 13:36:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:36:56,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 13:36:56,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:36:56,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:36:56,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 13:36:57,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 13:36:58,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:58,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 68 [2023-12-24 13:36:59,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:59,071 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 101 treesize of output 71 [2023-12-24 13:36:59,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:36:59,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 63 [2023-12-24 13:36:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 182 proven. 6 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 13:36:59,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:01,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1367701685] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:01,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:37:01,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [31, 21] total 62 [2023-12-24 13:37:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058378485] [2023-12-24 13:37:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:01,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 13:37:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 13:37:01,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=4571, Unknown=0, NotChecked=0, Total=4970 [2023-12-24 13:37:01,076 INFO L87 Difference]: Start difference. First operand 785 states and 1170 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:03,934 INFO L93 Difference]: Finished difference Result 1497 states and 2226 transitions. [2023-12-24 13:37:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 13:37:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:03,948 INFO L225 Difference]: With dead ends: 1497 [2023-12-24 13:37:03,948 INFO L226 Difference]: Without dead ends: 1103 [2023-12-24 13:37:03,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=546, Invalid=6426, Unknown=0, NotChecked=0, Total=6972 [2023-12-24 13:37:03,950 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 490 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:03,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1961 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 13:37:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2023-12-24 13:37:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 770. [2023-12-24 13:37:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 661 states have (on average 1.4311649016641452) internal successors, (946), 667 states have internal predecessors, (946), 100 states have call successors, (100), 8 states have call predecessors, (100), 8 states have return successors, (100), 94 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-24 13:37:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1146 transitions. [2023-12-24 13:37:03,992 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1146 transitions. Word has length 146 [2023-12-24 13:37:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:03,993 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1146 transitions. [2023-12-24 13:37:03,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1146 transitions. [2023-12-24 13:37:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:03,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:03,995 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:04,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 13:37:04,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 13:37:04,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:37:04,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:04,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1512689425, now seen corresponding path program 1 times [2023-12-24 13:37:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:04,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373363589] [2023-12-24 13:37:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:04,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:04,404 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 13:37:04,406 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 13:37:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:04,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:37:04,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:04,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:04,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-24 13:37:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:04,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:37:04,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373363589] [2023-12-24 13:37:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373363589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:37:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:37:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:37:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813011419] [2023-12-24 13:37:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:37:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:37:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:37:04,614 INFO L87 Difference]: Start difference. First operand 770 states and 1146 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:04,912 INFO L93 Difference]: Finished difference Result 1407 states and 2086 transitions. [2023-12-24 13:37:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:37:04,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:04,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:04,914 INFO L225 Difference]: With dead ends: 1407 [2023-12-24 13:37:04,915 INFO L226 Difference]: Without dead ends: 638 [2023-12-24 13:37:04,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:37:04,918 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 136 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:04,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 470 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:37:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-12-24 13:37:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 630. [2023-12-24 13:37:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 539 states have (on average 1.424860853432282) internal successors, (768), 543 states have internal predecessors, (768), 82 states have call successors, (82), 8 states have call predecessors, (82), 8 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 13:37:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 932 transitions. [2023-12-24 13:37:04,942 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 932 transitions. Word has length 146 [2023-12-24 13:37:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:04,942 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 932 transitions. [2023-12-24 13:37:04,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 932 transitions. [2023-12-24 13:37:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:04,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:04,944 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:04,951 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 13:37:05,151 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 13:37:05,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:05,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 470827814, now seen corresponding path program 1 times [2023-12-24 13:37:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:05,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164253479] [2023-12-24 13:37:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:05,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:05,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:05,154 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 13:37:05,154 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 13:37:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:05,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 13:37:05,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:05,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:37:05,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164253479] [2023-12-24 13:37:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164253479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:37:05,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:37:05,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:37:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619257592] [2023-12-24 13:37:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:37:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:37:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:37:05,351 INFO L87 Difference]: Start difference. First operand 630 states and 932 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:05,406 INFO L93 Difference]: Finished difference Result 1349 states and 1995 transitions. [2023-12-24 13:37:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:37:05,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:05,409 INFO L225 Difference]: With dead ends: 1349 [2023-12-24 13:37:05,409 INFO L226 Difference]: Without dead ends: 720 [2023-12-24 13:37:05,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:37:05,410 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 54 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:05,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 631 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:37:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-12-24 13:37:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 648. [2023-12-24 13:37:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 557 states have (on average 1.4111310592459605) internal successors, (786), 561 states have internal predecessors, (786), 82 states have call successors, (82), 8 states have call predecessors, (82), 8 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 13:37:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 950 transitions. [2023-12-24 13:37:05,435 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 950 transitions. Word has length 146 [2023-12-24 13:37:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:05,435 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 950 transitions. [2023-12-24 13:37:05,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 950 transitions. [2023-12-24 13:37:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:05,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:05,436 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:05,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 13:37:05,641 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 13:37:05,641 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:05,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1219598607, now seen corresponding path program 1 times [2023-12-24 13:37:05,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:05,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717177649] [2023-12-24 13:37:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:05,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:05,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:05,643 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 13:37:05,644 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 13:37:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:05,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 13:37:05,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:05,897 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 13:37:06,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:37:06,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-24 13:37:07,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:07,284 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 90 treesize of output 53 [2023-12-24 13:37:07,532 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 54 treesize of output 42 [2023-12-24 13:37:07,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:07,630 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 100 treesize of output 46 [2023-12-24 13:37:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 464 proven. 42 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-24 13:37:07,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:08,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717177649] [2023-12-24 13:37:08,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717177649] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:08,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:37:08,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [27] total 33 [2023-12-24 13:37:08,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897667979] [2023-12-24 13:37:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:08,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:37:08,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:37:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 13:37:08,271 INFO L87 Difference]: Start difference. First operand 648 states and 950 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:09,064 INFO L93 Difference]: Finished difference Result 1549 states and 2264 transitions. [2023-12-24 13:37:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:37:09,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:09,068 INFO L225 Difference]: With dead ends: 1549 [2023-12-24 13:37:09,068 INFO L226 Difference]: Without dead ends: 902 [2023-12-24 13:37:09,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 13:37:09,069 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 271 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:09,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 613 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 13:37:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-12-24 13:37:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 663. [2023-12-24 13:37:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 572 states have (on average 1.4125874125874125) internal successors, (808), 576 states have internal predecessors, (808), 82 states have call successors, (82), 8 states have call predecessors, (82), 8 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 13:37:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 972 transitions. [2023-12-24 13:37:09,095 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 972 transitions. Word has length 146 [2023-12-24 13:37:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:09,096 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 972 transitions. [2023-12-24 13:37:09,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 972 transitions. [2023-12-24 13:37:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:09,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:09,097 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:09,117 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 13:37:09,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:09,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:09,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1316636305, now seen corresponding path program 1 times [2023-12-24 13:37:09,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:09,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142565006] [2023-12-24 13:37:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:09,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:09,305 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:37:09,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 13:37:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:09,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:37:09,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:09,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:09,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2023-12-24 13:37:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:09,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:37:09,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:09,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142565006] [2023-12-24 13:37:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142565006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:37:09,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:37:09,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:37:09,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725064675] [2023-12-24 13:37:09,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:09,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:37:09,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:37:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:37:09,525 INFO L87 Difference]: Start difference. First operand 663 states and 972 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:09,945 INFO L93 Difference]: Finished difference Result 1464 states and 2139 transitions. [2023-12-24 13:37:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:37:09,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:09,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:09,948 INFO L225 Difference]: With dead ends: 1464 [2023-12-24 13:37:09,948 INFO L226 Difference]: Without dead ends: 802 [2023-12-24 13:37:09,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 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 13:37:09,950 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 131 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:09,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 737 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:37:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-12-24 13:37:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 798. [2023-12-24 13:37:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 678 states have (on average 1.396755162241888) internal successors, (947), 684 states have internal predecessors, (947), 108 states have call successors, (108), 11 states have call predecessors, (108), 11 states have return successors, (108), 102 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 13:37:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1163 transitions. [2023-12-24 13:37:09,990 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1163 transitions. Word has length 146 [2023-12-24 13:37:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:09,990 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1163 transitions. [2023-12-24 13:37:09,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1163 transitions. [2023-12-24 13:37:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:09,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:09,992 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:10,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 13:37:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:10,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:10,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:10,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1450649811, now seen corresponding path program 1 times [2023-12-24 13:37:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043653302] [2023-12-24 13:37:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:10,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:10,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:10,217 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 13:37:10,232 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 13:37:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:10,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 13:37:10,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:10,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-24 13:37:10,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:37:11,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 13:37:11,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:11,524 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 45 treesize of output 41 [2023-12-24 13:37:11,800 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 44 treesize of output 49 [2023-12-24 13:37:13,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:13,313 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 114 treesize of output 92 [2023-12-24 13:37:14,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:14,008 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 110 treesize of output 58 [2023-12-24 13:37:14,163 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 46 treesize of output 34 [2023-12-24 13:37:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 149 proven. 376 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-24 13:37:14,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:16,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:16,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043653302] [2023-12-24 13:37:16,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043653302] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:16,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1671184299] [2023-12-24 13:37:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:16,719 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:37:16,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:37:16,720 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:37:16,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 13:37:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:17,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 13:37:17,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:17,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-12-24 13:37:18,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:18,305 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 49 treesize of output 32 [2023-12-24 13:37:19,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:19,074 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 55 treesize of output 52 [2023-12-24 13:37:19,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-12-24 13:37:21,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:21,602 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 119 treesize of output 106 [2023-12-24 13:37:22,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:22,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 123 treesize of output 71 [2023-12-24 13:37:22,739 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 46 treesize of output 34 [2023-12-24 13:37:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 432 proven. 24 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-24 13:37:22,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:23,011 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 77 treesize of output 65 [2023-12-24 13:37:23,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1671184299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:23,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:37:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 29] total 63 [2023-12-24 13:37:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777146811] [2023-12-24 13:37:23,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:37:23,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-24 13:37:23,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-24 13:37:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=6008, Unknown=0, NotChecked=0, Total=6642 [2023-12-24 13:37:23,258 INFO L87 Difference]: Start difference. First operand 798 states and 1163 transitions. Second operand has 64 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 57 states have internal predecessors, (144), 18 states have call successors, (38), 12 states have call predecessors, (38), 18 states have return successors, (38), 15 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-24 13:37:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:38,957 INFO L93 Difference]: Finished difference Result 1839 states and 2637 transitions. [2023-12-24 13:37:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-24 13:37:38,958 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 57 states have internal predecessors, (144), 18 states have call successors, (38), 12 states have call predecessors, (38), 18 states have return successors, (38), 15 states have call predecessors, (38), 18 states have call successors, (38) Word has length 146 [2023-12-24 13:37:38,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:38,961 INFO L225 Difference]: With dead ends: 1839 [2023-12-24 13:37:38,961 INFO L226 Difference]: Without dead ends: 1042 [2023-12-24 13:37:38,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 275 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5265 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=2399, Invalid=15423, Unknown=0, NotChecked=0, Total=17822 [2023-12-24 13:37:38,965 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1527 mSDsluCounter, 5711 mSDsCounter, 0 mSdLazyCounter, 5194 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 5884 SdHoareTripleChecker+Invalid, 5499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 5194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:38,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 5884 Invalid, 5499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 5194 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-24 13:37:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2023-12-24 13:37:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 613. [2023-12-24 13:37:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 526 states have (on average 1.3954372623574145) internal successors, (734), 529 states have internal predecessors, (734), 73 states have call successors, (73), 13 states have call predecessors, (73), 13 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 13:37:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 880 transitions. [2023-12-24 13:37:38,996 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 880 transitions. Word has length 146 [2023-12-24 13:37:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:38,996 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 880 transitions. [2023-12-24 13:37:38,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 57 states have internal predecessors, (144), 18 states have call successors, (38), 12 states have call predecessors, (38), 18 states have return successors, (38), 15 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-24 13:37:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 880 transitions. [2023-12-24 13:37:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:38,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:38,998 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:39,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 13:37:39,212 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 13:37:39,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 13:37:39,405 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:39,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1157558993, now seen corresponding path program 1 times [2023-12-24 13:37:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158895279] [2023-12-24 13:37:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:39,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:39,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:39,407 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 13:37:39,408 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 13:37:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:39,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 13:37:39,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:39,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:37:39,739 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 13:37:39,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:39,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 13:37:40,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:40,107 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 61 treesize of output 36 [2023-12-24 13:37:40,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:40,170 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 62 treesize of output 26 [2023-12-24 13:37:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 286 proven. 15 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-12-24 13:37:40,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:40,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:40,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158895279] [2023-12-24 13:37:40,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158895279] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:40,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:37:40,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-12-24 13:37:40,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948724597] [2023-12-24 13:37:40,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:40,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:37:40,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:37:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:37:40,388 INFO L87 Difference]: Start difference. First operand 613 states and 880 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:40,714 INFO L93 Difference]: Finished difference Result 1340 states and 1913 transitions. [2023-12-24 13:37:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:37:40,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:40,717 INFO L225 Difference]: With dead ends: 1340 [2023-12-24 13:37:40,717 INFO L226 Difference]: Without dead ends: 728 [2023-12-24 13:37:40,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:37:40,719 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 282 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:40,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 589 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:37:40,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-12-24 13:37:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 613. [2023-12-24 13:37:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 526 states have (on average 1.3897338403041826) internal successors, (731), 529 states have internal predecessors, (731), 73 states have call successors, (73), 13 states have call predecessors, (73), 13 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 13:37:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 877 transitions. [2023-12-24 13:37:40,745 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 877 transitions. Word has length 146 [2023-12-24 13:37:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:40,745 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 877 transitions. [2023-12-24 13:37:40,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 877 transitions. [2023-12-24 13:37:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:40,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:40,747 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:40,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-24 13:37:40,953 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 13:37:40,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:40,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2126291053, now seen corresponding path program 1 times [2023-12-24 13:37:40,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:40,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229183969] [2023-12-24 13:37:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:40,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:40,955 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 13:37:40,957 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 13:37:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:41,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:37:41,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:41,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:41,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2023-12-24 13:37:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:41,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:37:41,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229183969] [2023-12-24 13:37:41,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229183969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:37:41,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:37:41,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:37:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272876935] [2023-12-24 13:37:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:41,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:37:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:37:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:37:41,233 INFO L87 Difference]: Start difference. First operand 613 states and 877 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:41,626 INFO L93 Difference]: Finished difference Result 1615 states and 2304 transitions. [2023-12-24 13:37:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:37:41,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:41,633 INFO L225 Difference]: With dead ends: 1615 [2023-12-24 13:37:41,633 INFO L226 Difference]: Without dead ends: 1003 [2023-12-24 13:37:41,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:37:41,636 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 244 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:41,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 765 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:37:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2023-12-24 13:37:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 614. [2023-12-24 13:37:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 527 states have (on average 1.3851992409867173) internal successors, (730), 530 states have internal predecessors, (730), 73 states have call successors, (73), 13 states have call predecessors, (73), 13 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 13:37:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 876 transitions. [2023-12-24 13:37:41,671 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 876 transitions. Word has length 146 [2023-12-24 13:37:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:41,672 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 876 transitions. [2023-12-24 13:37:41,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 876 transitions. [2023-12-24 13:37:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:41,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:41,674 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:41,683 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 13:37:41,881 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 13:37:41,881 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:41,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1910510805, now seen corresponding path program 1 times [2023-12-24 13:37:41,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:41,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467915360] [2023-12-24 13:37:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:41,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:41,884 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 13:37:41,896 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 (19)] Waiting until timeout for monitored process [2023-12-24 13:37:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:42,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 13:37:42,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:42,205 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 13:37:42,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:37:42,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:37:42,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-24 13:37:43,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:43,700 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 79 treesize of output 48 [2023-12-24 13:37:44,097 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 54 treesize of output 42 [2023-12-24 13:37:44,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:44,236 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 93 treesize of output 45 [2023-12-24 13:37:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 474 proven. 48 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-24 13:37:44,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:37:45,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467915360] [2023-12-24 13:37:45,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467915360] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:45,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:37:45,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [29] total 37 [2023-12-24 13:37:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990372043] [2023-12-24 13:37:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:37:45,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:37:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:37:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 13:37:45,115 INFO L87 Difference]: Start difference. First operand 614 states and 876 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:46,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:37:46,738 INFO L93 Difference]: Finished difference Result 1502 states and 2145 transitions. [2023-12-24 13:37:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:37:46,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:37:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:37:46,742 INFO L225 Difference]: With dead ends: 1502 [2023-12-24 13:37:46,742 INFO L226 Difference]: Without dead ends: 889 [2023-12-24 13:37:46,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=230, Invalid=1492, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 13:37:46,744 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 297 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:37:46,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1189 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 13:37:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-12-24 13:37:46,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 643. [2023-12-24 13:37:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 556 states have (on average 1.393884892086331) internal successors, (775), 559 states have internal predecessors, (775), 73 states have call successors, (73), 13 states have call predecessors, (73), 13 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 13:37:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 921 transitions. [2023-12-24 13:37:46,773 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 921 transitions. Word has length 146 [2023-12-24 13:37:46,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:37:46,773 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 921 transitions. [2023-12-24 13:37:46,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:37:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 921 transitions. [2023-12-24 13:37:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:37:46,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:37:46,774 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:37:46,785 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 13:37:46,980 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 13:37:46,980 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:37:46,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:37:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2129365523, now seen corresponding path program 1 times [2023-12-24 13:37:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:37:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013272291] [2023-12-24 13:37:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:46,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:37:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:37:46,982 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 13:37:46,985 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 13:37:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:47,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 13:37:47,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:47,744 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 29 treesize of output 17 [2023-12-24 13:37:47,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:37:47,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 13:37:48,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:48,269 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 45 treesize of output 41 [2023-12-24 13:37:48,554 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 44 treesize of output 49 [2023-12-24 13:37:49,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:49,650 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 72 treesize of output 74 [2023-12-24 13:37:49,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:49,921 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 103 treesize of output 83 [2023-12-24 13:37:50,215 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 43 treesize of output 31 [2023-12-24 13:37:50,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:50,345 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 96 treesize of output 46 [2023-12-24 13:37:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 149 proven. 376 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-24 13:37:50,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:52,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:37:52,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013272291] [2023-12-24 13:37:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013272291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:52,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1502069536] [2023-12-24 13:37:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:37:52,010 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:37:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:37:52,011 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:37:52,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-24 13:37:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:37:52,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 13:37:52,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:37:52,939 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 32 treesize of output 16 [2023-12-24 13:37:53,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:53,318 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 13:37:54,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:54,032 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 58 treesize of output 44 [2023-12-24 13:37:54,181 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 58 treesize of output 44 [2023-12-24 13:37:55,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:55,548 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 94 treesize of output 86 [2023-12-24 13:37:55,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:55,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 84 [2023-12-24 13:37:56,215 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 65 treesize of output 49 [2023-12-24 13:37:56,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:37:56,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 47 [2023-12-24 13:37:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 377 proven. 24 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-12-24 13:37:56,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:37:56,572 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 73 treesize of output 61 [2023-12-24 13:37:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1502069536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:37:56,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:37:56,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 24] total 57 [2023-12-24 13:37:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181297971] [2023-12-24 13:37:56,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:37:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-24 13:37:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:37:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-24 13:37:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=4582, Unknown=0, NotChecked=0, Total=5112 [2023-12-24 13:37:56,841 INFO L87 Difference]: Start difference. First operand 643 states and 921 transitions. Second operand has 58 states, 50 states have (on average 2.8) internal successors, (140), 51 states have internal predecessors, (140), 17 states have call successors, (38), 11 states have call predecessors, (38), 17 states have return successors, (38), 14 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 13:38:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:08,499 INFO L93 Difference]: Finished difference Result 1450 states and 2070 transitions. [2023-12-24 13:38:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-24 13:38:08,500 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 50 states have (on average 2.8) internal successors, (140), 51 states have internal predecessors, (140), 17 states have call successors, (38), 11 states have call predecessors, (38), 17 states have return successors, (38), 14 states have call predecessors, (38), 17 states have call successors, (38) Word has length 146 [2023-12-24 13:38:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:08,503 INFO L225 Difference]: With dead ends: 1450 [2023-12-24 13:38:08,503 INFO L226 Difference]: Without dead ends: 1034 [2023-12-24 13:38:08,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4507 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2126, Invalid=12636, Unknown=0, NotChecked=0, Total=14762 [2023-12-24 13:38:08,506 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 2943 mSDsluCounter, 6249 mSDsCounter, 0 mSdLazyCounter, 4744 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2943 SdHoareTripleChecker+Valid, 6510 SdHoareTripleChecker+Invalid, 5357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 4744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:08,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2943 Valid, 6510 Invalid, 5357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 4744 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-24 13:38:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-24 13:38:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 643. [2023-12-24 13:38:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 556 states have (on average 1.393884892086331) internal successors, (775), 559 states have internal predecessors, (775), 73 states have call successors, (73), 13 states have call predecessors, (73), 13 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 13:38:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 921 transitions. [2023-12-24 13:38:08,540 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 921 transitions. Word has length 146 [2023-12-24 13:38:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:08,540 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 921 transitions. [2023-12-24 13:38:08,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 50 states have (on average 2.8) internal successors, (140), 51 states have internal predecessors, (140), 17 states have call successors, (38), 11 states have call predecessors, (38), 17 states have return successors, (38), 14 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 13:38:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 921 transitions. [2023-12-24 13:38:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:08,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:08,541 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:08,550 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 13:38:08,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-24 13:38:08,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:38:08,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:08,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1137856257, now seen corresponding path program 1 times [2023-12-24 13:38:08,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:08,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418526345] [2023-12-24 13:38:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:08,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:08,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:08,950 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 13:38:08,950 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 13:38:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:09,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 13:38:09,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:09,223 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 13:38:09,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:38:09,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:38:10,113 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 59 treesize of output 31 [2023-12-24 13:38:10,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2023-12-24 13:38:10,269 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 38 [2023-12-24 13:38:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 454 proven. 48 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-24 13:38:10,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:10,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:10,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418526345] [2023-12-24 13:38:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418526345] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:10,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 24 [2023-12-24 13:38:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021185780] [2023-12-24 13:38:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:38:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:38:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:38:10,527 INFO L87 Difference]: Start difference. First operand 643 states and 921 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:10,865 INFO L93 Difference]: Finished difference Result 1605 states and 2307 transitions. [2023-12-24 13:38:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:38:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:10,873 INFO L225 Difference]: With dead ends: 1605 [2023-12-24 13:38:10,873 INFO L226 Difference]: Without dead ends: 963 [2023-12-24 13:38:10,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-24 13:38:10,875 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 222 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:10,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 649 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:38:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-12-24 13:38:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 758. [2023-12-24 13:38:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 661 states have (on average 1.4069591527987897) internal successors, (930), 665 states have internal predecessors, (930), 82 states have call successors, (82), 14 states have call predecessors, (82), 14 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 13:38:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1094 transitions. [2023-12-24 13:38:10,922 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1094 transitions. Word has length 146 [2023-12-24 13:38:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:10,922 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 1094 transitions. [2023-12-24 13:38:10,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1094 transitions. [2023-12-24 13:38:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:10,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:10,923 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:10,933 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 13:38:11,130 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 13:38:11,131 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:11,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1724662271, now seen corresponding path program 1 times [2023-12-24 13:38:11,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:11,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104476245] [2023-12-24 13:38:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:11,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:11,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:11,133 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 13:38:11,133 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 13:38:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:11,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 13:38:11,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:11,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:11,585 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 29 treesize of output 13 [2023-12-24 13:38:11,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:11,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 13:38:11,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:11,966 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 50 treesize of output 40 [2023-12-24 13:38:12,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:12,403 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 80 treesize of output 71 [2023-12-24 13:38:13,030 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 54 treesize of output 38 [2023-12-24 13:38:13,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:13,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 45 [2023-12-24 13:38:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 442 proven. 63 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-24 13:38:13,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:14,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104476245] [2023-12-24 13:38:14,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104476245] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:14,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:14,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [30] total 40 [2023-12-24 13:38:14,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417464366] [2023-12-24 13:38:14,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:14,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 13:38:14,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 13:38:14,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 13:38:14,165 INFO L87 Difference]: Start difference. First operand 758 states and 1094 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:16,058 INFO L93 Difference]: Finished difference Result 1997 states and 2881 transitions. [2023-12-24 13:38:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 13:38:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:16,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:16,072 INFO L225 Difference]: With dead ends: 1997 [2023-12-24 13:38:16,072 INFO L226 Difference]: Without dead ends: 1240 [2023-12-24 13:38:16,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=298, Invalid=2354, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 13:38:16,074 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 627 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:16,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1868 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 13:38:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2023-12-24 13:38:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 800. [2023-12-24 13:38:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 703 states have (on average 1.4125177809388336) internal successors, (993), 707 states have internal predecessors, (993), 82 states have call successors, (82), 14 states have call predecessors, (82), 14 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 13:38:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1157 transitions. [2023-12-24 13:38:16,117 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1157 transitions. Word has length 146 [2023-12-24 13:38:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:16,117 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1157 transitions. [2023-12-24 13:38:16,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1157 transitions. [2023-12-24 13:38:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:16,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:16,118 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:16,126 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 (23)] Ended with exit code 0 [2023-12-24 13:38:16,324 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 13:38:16,324 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:16,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1023597693, now seen corresponding path program 1 times [2023-12-24 13:38:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131064134] [2023-12-24 13:38:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:16,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:16,326 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 13:38:16,360 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 13:38:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:16,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 13:38:16,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:16,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:16,808 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 29 treesize of output 13 [2023-12-24 13:38:17,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:17,000 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 13:38:17,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:17,105 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 13:38:17,251 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 28 treesize of output 16 [2023-12-24 13:38:17,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:17,430 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 66 treesize of output 54 [2023-12-24 13:38:17,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:17,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 38 [2023-12-24 13:38:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 442 proven. 63 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-24 13:38:17,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:18,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:18,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131064134] [2023-12-24 13:38:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131064134] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:18,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:18,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [25] total 31 [2023-12-24 13:38:18,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429726686] [2023-12-24 13:38:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:18,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:38:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:38:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2023-12-24 13:38:18,280 INFO L87 Difference]: Start difference. First operand 800 states and 1157 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:19,209 INFO L93 Difference]: Finished difference Result 2494 states and 3600 transitions. [2023-12-24 13:38:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:38:19,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:19,231 INFO L225 Difference]: With dead ends: 2494 [2023-12-24 13:38:19,231 INFO L226 Difference]: Without dead ends: 1695 [2023-12-24 13:38:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 13:38:19,233 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 679 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:19,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 987 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 13:38:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-12-24 13:38:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1144. [2023-12-24 13:38:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1003 states have (on average 1.4167497507477567) internal successors, (1421), 1011 states have internal predecessors, (1421), 122 states have call successors, (122), 18 states have call predecessors, (122), 18 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 13:38:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1665 transitions. [2023-12-24 13:38:19,304 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1665 transitions. Word has length 146 [2023-12-24 13:38:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:19,305 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1665 transitions. [2023-12-24 13:38:19,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1665 transitions. [2023-12-24 13:38:19,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:19,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:19,306 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:19,312 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 (24)] Ended with exit code 0 [2023-12-24 13:38:19,515 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 13:38:19,515 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:19,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2147364097, now seen corresponding path program 1 times [2023-12-24 13:38:19,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:19,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191542902] [2023-12-24 13:38:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:19,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:19,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:19,517 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 13:38:19,517 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 13:38:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:19,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:38:19,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:19,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:19,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:38:19,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:38:19,818 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 19 treesize of output 1 [2023-12-24 13:38:19,839 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 30 [2023-12-24 13:38:19,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:19,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 33 [2023-12-24 13:38:19,895 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 36 treesize of output 28 [2023-12-24 13:38:19,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:19,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 24 [2023-12-24 13:38:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:19,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:38:19,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:19,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191542902] [2023-12-24 13:38:19,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191542902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:38:19,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:38:19,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 13:38:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980262216] [2023-12-24 13:38:19,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:19,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:38:19,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:19,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:38:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-24 13:38:19,996 INFO L87 Difference]: Start difference. First operand 1144 states and 1665 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:20,788 INFO L93 Difference]: Finished difference Result 2077 states and 3023 transitions. [2023-12-24 13:38:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 13:38:20,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:20,793 INFO L225 Difference]: With dead ends: 2077 [2023-12-24 13:38:20,793 INFO L226 Difference]: Without dead ends: 1257 [2023-12-24 13:38:20,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-24 13:38:20,796 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 336 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:20,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1429 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:38:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2023-12-24 13:38:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1144. [2023-12-24 13:38:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1003 states have (on average 1.4167497507477567) internal successors, (1421), 1011 states have internal predecessors, (1421), 122 states have call successors, (122), 18 states have call predecessors, (122), 18 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 13:38:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1665 transitions. [2023-12-24 13:38:20,865 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1665 transitions. Word has length 146 [2023-12-24 13:38:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:20,865 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1665 transitions. [2023-12-24 13:38:20,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1665 transitions. [2023-12-24 13:38:20,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:20,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:20,866 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:20,877 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 13:38:21,074 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 13:38:21,074 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:21,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1446299519, now seen corresponding path program 1 times [2023-12-24 13:38:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434140847] [2023-12-24 13:38:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:21,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:21,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:21,076 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 13:38:21,078 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 13:38:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:21,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:38:21,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:21,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:21,391 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 29 treesize of output 13 [2023-12-24 13:38:21,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:21,470 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 13:38:21,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:21,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 13:38:21,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:21,747 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 49 [2023-12-24 13:38:21,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:21,773 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 49 [2023-12-24 13:38:21,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:21,853 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 68 treesize of output 32 [2023-12-24 13:38:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 372 proven. 27 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-12-24 13:38:21,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:22,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434140847] [2023-12-24 13:38:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434140847] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:22,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:22,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-12-24 13:38:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070939494] [2023-12-24 13:38:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:22,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:38:22,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:38:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:38:22,038 INFO L87 Difference]: Start difference. First operand 1144 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:22,360 INFO L93 Difference]: Finished difference Result 2169 states and 3151 transitions. [2023-12-24 13:38:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:38:22,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:22,366 INFO L225 Difference]: With dead ends: 2169 [2023-12-24 13:38:22,366 INFO L226 Difference]: Without dead ends: 1349 [2023-12-24 13:38:22,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:38:22,367 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 196 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:22,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 757 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:38:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-12-24 13:38:22,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1111. [2023-12-24 13:38:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 970 states have (on average 1.409278350515464) internal successors, (1367), 978 states have internal predecessors, (1367), 122 states have call successors, (122), 18 states have call predecessors, (122), 18 states have return successors, (122), 114 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 13:38:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1611 transitions. [2023-12-24 13:38:22,432 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1611 transitions. Word has length 146 [2023-12-24 13:38:22,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:22,432 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1611 transitions. [2023-12-24 13:38:22,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1611 transitions. [2023-12-24 13:38:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:22,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:22,433 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:22,439 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 (26)] Ended with exit code 0 [2023-12-24 13:38:22,639 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 13:38:22,639 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:22,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1858675777, now seen corresponding path program 1 times [2023-12-24 13:38:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:22,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514760291] [2023-12-24 13:38:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:22,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:22,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:22,641 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 13:38:22,642 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 13:38:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:22,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-24 13:38:22,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:22,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:23,105 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 29 treesize of output 13 [2023-12-24 13:38:23,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:23,297 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 13:38:23,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:23,403 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 13:38:23,540 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 28 treesize of output 16 [2023-12-24 13:38:23,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:23,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 49 [2023-12-24 13:38:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 442 proven. 63 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-24 13:38:23,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:24,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514760291] [2023-12-24 13:38:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514760291] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:24,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:24,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [23] total 29 [2023-12-24 13:38:24,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008134702] [2023-12-24 13:38:24,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:24,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:38:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:38:24,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2023-12-24 13:38:24,285 INFO L87 Difference]: Start difference. First operand 1111 states and 1611 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:25,113 INFO L93 Difference]: Finished difference Result 2809 states and 4058 transitions. [2023-12-24 13:38:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:38:25,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:25,118 INFO L225 Difference]: With dead ends: 2809 [2023-12-24 13:38:25,118 INFO L226 Difference]: Without dead ends: 1699 [2023-12-24 13:38:25,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 13:38:25,120 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 458 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:25,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1004 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 13:38:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-12-24 13:38:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1021. [2023-12-24 13:38:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 901 states have (on average 1.4173140954495005) internal successors, (1277), 907 states have internal predecessors, (1277), 102 states have call successors, (102), 17 states have call predecessors, (102), 17 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 13:38:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1481 transitions. [2023-12-24 13:38:25,180 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1481 transitions. Word has length 146 [2023-12-24 13:38:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:25,181 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1481 transitions. [2023-12-24 13:38:25,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1481 transitions. [2023-12-24 13:38:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:25,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:25,182 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:25,188 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 13:38:25,388 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 13:38:25,388 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:25,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1157611199, now seen corresponding path program 1 times [2023-12-24 13:38:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971257764] [2023-12-24 13:38:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:25,390 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 13:38:25,391 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 13:38:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:25,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 13:38:25,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:26,090 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 29 treesize of output 17 [2023-12-24 13:38:26,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:38:26,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 13:38:26,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:26,641 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 45 treesize of output 41 [2023-12-24 13:38:26,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:26,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 13:38:27,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:27,654 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 71 treesize of output 73 [2023-12-24 13:38:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 379 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-24 13:38:27,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:28,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971257764] [2023-12-24 13:38:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971257764] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:28,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:28,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [29] total 41 [2023-12-24 13:38:28,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608357969] [2023-12-24 13:38:28,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:28,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 13:38:28,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 13:38:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1485, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 13:38:28,958 INFO L87 Difference]: Start difference. First operand 1021 states and 1481 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:31,216 INFO L93 Difference]: Finished difference Result 2432 states and 3516 transitions. [2023-12-24 13:38:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 13:38:31,217 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:31,221 INFO L225 Difference]: With dead ends: 2432 [2023-12-24 13:38:31,221 INFO L226 Difference]: Without dead ends: 1412 [2023-12-24 13:38:31,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=300, Invalid=2780, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 13:38:31,223 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 628 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:31,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 2119 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 13:38:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2023-12-24 13:38:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1023. [2023-12-24 13:38:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 903 states have (on average 1.4163898117386489) internal successors, (1279), 909 states have internal predecessors, (1279), 102 states have call successors, (102), 17 states have call predecessors, (102), 17 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 13:38:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1483 transitions. [2023-12-24 13:38:31,284 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1483 transitions. Word has length 146 [2023-12-24 13:38:31,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:31,284 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1483 transitions. [2023-12-24 13:38:31,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1483 transitions. [2023-12-24 13:38:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:31,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:31,285 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:31,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-24 13:38:31,494 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 13:38:31,494 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:31,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2013589693, now seen corresponding path program 1 times [2023-12-24 13:38:31,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:31,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815088533] [2023-12-24 13:38:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:31,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:31,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:31,496 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 13:38:31,497 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 13:38:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:31,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:38:31,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:31,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:31,819 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 29 treesize of output 13 [2023-12-24 13:38:31,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:31,892 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 13:38:31,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:31,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 13:38:32,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:32,158 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 59 treesize of output 45 [2023-12-24 13:38:32,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:32,176 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 59 treesize of output 45 [2023-12-24 13:38:32,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:32,254 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 58 treesize of output 28 [2023-12-24 13:38:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 372 proven. 27 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-12-24 13:38:32,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:32,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815088533] [2023-12-24 13:38:32,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815088533] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-12-24 13:38:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243772884] [2023-12-24 13:38:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:32,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:38:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:38:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:38:32,438 INFO L87 Difference]: Start difference. First operand 1023 states and 1483 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:32,719 INFO L93 Difference]: Finished difference Result 2098 states and 3032 transitions. [2023-12-24 13:38:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:38:32,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:32,723 INFO L225 Difference]: With dead ends: 2098 [2023-12-24 13:38:32,723 INFO L226 Difference]: Without dead ends: 1401 [2023-12-24 13:38:32,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:38:32,725 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 305 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:32,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 502 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:38:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-24 13:38:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1007. [2023-12-24 13:38:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 887 states have (on average 1.4103720405862459) internal successors, (1251), 893 states have internal predecessors, (1251), 102 states have call successors, (102), 17 states have call predecessors, (102), 17 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 13:38:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1455 transitions. [2023-12-24 13:38:32,779 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1455 transitions. Word has length 146 [2023-12-24 13:38:32,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:32,780 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1455 transitions. [2023-12-24 13:38:32,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:32,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1455 transitions. [2023-12-24 13:38:32,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:32,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:32,781 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:32,789 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 (29)] Ended with exit code 0 [2023-12-24 13:38:32,987 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 13:38:32,987 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:32,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1580313025, now seen corresponding path program 1 times [2023-12-24 13:38:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:32,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608124010] [2023-12-24 13:38:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:32,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:32,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:32,989 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 13:38:32,990 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 13:38:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:33,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 13:38:33,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:33,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:38:33,499 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 13:38:33,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:33,644 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 41 treesize of output 28 [2023-12-24 13:38:33,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:33,902 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 53 treesize of output 49 [2023-12-24 13:38:33,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:33,990 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 52 [2023-12-24 13:38:34,174 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 55 treesize of output 39 [2023-12-24 13:38:34,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:34,302 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 66 treesize of output 30 [2023-12-24 13:38:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 438 proven. 54 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-24 13:38:34,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:34,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608124010] [2023-12-24 13:38:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608124010] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:34,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [23] total 30 [2023-12-24 13:38:34,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616340885] [2023-12-24 13:38:34,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:34,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:38:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:34,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:38:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2023-12-24 13:38:34,805 INFO L87 Difference]: Start difference. First operand 1007 states and 1455 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:35,752 INFO L93 Difference]: Finished difference Result 1897 states and 2738 transitions. [2023-12-24 13:38:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 13:38:35,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:35,756 INFO L225 Difference]: With dead ends: 1897 [2023-12-24 13:38:35,756 INFO L226 Difference]: Without dead ends: 1216 [2023-12-24 13:38:35,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 13:38:35,758 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 290 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:35,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1740 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 13:38:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-12-24 13:38:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 990. [2023-12-24 13:38:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 870 states have (on average 1.4080459770114941) internal successors, (1225), 876 states have internal predecessors, (1225), 102 states have call successors, (102), 17 states have call predecessors, (102), 17 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 13:38:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1429 transitions. [2023-12-24 13:38:35,814 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1429 transitions. Word has length 146 [2023-12-24 13:38:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:35,815 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1429 transitions. [2023-12-24 13:38:35,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1429 transitions. [2023-12-24 13:38:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:35,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:35,816 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:35,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-24 13:38:36,023 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 13:38:36,023 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:36,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1199895871, now seen corresponding path program 1 times [2023-12-24 13:38:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169493466] [2023-12-24 13:38:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:36,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:36,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:36,025 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 13:38:36,027 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 13:38:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:36,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 13:38:36,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:36,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:36,352 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 29 treesize of output 13 [2023-12-24 13:38:36,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:36,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 13:38:36,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:36,532 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 50 treesize of output 40 [2023-12-24 13:38:36,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:36,719 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 63 treesize of output 58 [2023-12-24 13:38:37,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:37,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 119 treesize of output 55 [2023-12-24 13:38:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 356 proven. 27 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-24 13:38:37,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:37,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:37,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169493466] [2023-12-24 13:38:37,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169493466] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:37,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:37,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 30 [2023-12-24 13:38:37,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943301440] [2023-12-24 13:38:37,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:37,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:38:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:38:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-12-24 13:38:37,901 INFO L87 Difference]: Start difference. First operand 990 states and 1429 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:39,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:39,540 INFO L93 Difference]: Finished difference Result 2452 states and 3521 transitions. [2023-12-24 13:38:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 13:38:39,540 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:39,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:39,544 INFO L225 Difference]: With dead ends: 2452 [2023-12-24 13:38:39,544 INFO L226 Difference]: Without dead ends: 1463 [2023-12-24 13:38:39,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 13:38:39,546 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 759 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:39,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1713 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 13:38:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-12-24 13:38:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1009. [2023-12-24 13:38:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 889 states have (on average 1.4105736782902136) internal successors, (1254), 895 states have internal predecessors, (1254), 102 states have call successors, (102), 17 states have call predecessors, (102), 17 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-24 13:38:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1458 transitions. [2023-12-24 13:38:39,616 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1458 transitions. Word has length 146 [2023-12-24 13:38:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:39,616 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1458 transitions. [2023-12-24 13:38:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1458 transitions. [2023-12-24 13:38:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:39,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:39,617 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:39,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 13:38:39,824 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 13:38:39,824 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:39,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:39,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1786701885, now seen corresponding path program 1 times [2023-12-24 13:38:39,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:39,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803432886] [2023-12-24 13:38:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:39,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:39,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:39,826 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 13:38:39,827 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 13:38:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:40,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 13:38:40,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:40,121 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 13:38:40,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:38:40,556 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 13:38:40,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:40,938 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 34 [2023-12-24 13:38:41,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:41,025 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 38 treesize of output 20 [2023-12-24 13:38:41,027 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 29 treesize of output 17 [2023-12-24 13:38:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 434 proven. 48 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-24 13:38:41,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:38:41,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803432886] [2023-12-24 13:38:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803432886] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:41,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:38:41,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 24 [2023-12-24 13:38:41,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005170884] [2023-12-24 13:38:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:41,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:38:41,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:38:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:38:41,258 INFO L87 Difference]: Start difference. First operand 1009 states and 1458 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:41,566 INFO L93 Difference]: Finished difference Result 2114 states and 3045 transitions. [2023-12-24 13:38:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:38:41,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 13:38:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:41,569 INFO L225 Difference]: With dead ends: 2114 [2023-12-24 13:38:41,569 INFO L226 Difference]: Without dead ends: 1106 [2023-12-24 13:38:41,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-12-24 13:38:41,571 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 306 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:41,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 561 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:38:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-12-24 13:38:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 891. [2023-12-24 13:38:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 789 states have (on average 1.4106463878326996) internal successors, (1113), 793 states have internal predecessors, (1113), 84 states have call successors, (84), 17 states have call predecessors, (84), 17 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 13:38:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1281 transitions. [2023-12-24 13:38:41,650 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1281 transitions. Word has length 146 [2023-12-24 13:38:41,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:41,651 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1281 transitions. [2023-12-24 13:38:41,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:38:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1281 transitions. [2023-12-24 13:38:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:41,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:41,652 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:41,660 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 13:38:41,857 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 13:38:41,857 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:41,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:41,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1622597697, now seen corresponding path program 1 times [2023-12-24 13:38:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104300007] [2023-12-24 13:38:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:41,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:41,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:41,859 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 13:38:41,860 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 13:38:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:42,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 13:38:42,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:42,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:42,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:38:42,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:38:42,236 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 13:38:42,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:42,307 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 43 treesize of output 39 [2023-12-24 13:38:42,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:42,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 42 [2023-12-24 13:38:42,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:42,442 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 71 treesize of output 33 [2023-12-24 13:38:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-24 13:38:42,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:38:42,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104300007] [2023-12-24 13:38:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104300007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:38:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:38:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 13:38:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411656861] [2023-12-24 13:38:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:38:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:38:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:38:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:38:42,497 INFO L87 Difference]: Start difference. First operand 891 states and 1281 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 13:38:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:43,681 INFO L93 Difference]: Finished difference Result 1700 states and 2429 transitions. [2023-12-24 13:38:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 13:38:43,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 146 [2023-12-24 13:38:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:43,684 INFO L225 Difference]: With dead ends: 1700 [2023-12-24 13:38:43,684 INFO L226 Difference]: Without dead ends: 1133 [2023-12-24 13:38:43,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-24 13:38:43,685 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 429 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:43,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1243 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 13:38:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-12-24 13:38:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 875. [2023-12-24 13:38:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 773 states have (on average 1.407503234152652) internal successors, (1088), 777 states have internal predecessors, (1088), 84 states have call successors, (84), 17 states have call predecessors, (84), 17 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 13:38:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1256 transitions. [2023-12-24 13:38:43,738 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1256 transitions. Word has length 146 [2023-12-24 13:38:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:43,739 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1256 transitions. [2023-12-24 13:38:43,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 13:38:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1256 transitions. [2023-12-24 13:38:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:43,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:43,740 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:43,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-24 13:38:43,940 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 13:38:43,940 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:43,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash -632844799, now seen corresponding path program 1 times [2023-12-24 13:38:43,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:43,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155860744] [2023-12-24 13:38:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:43,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:43,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:43,942 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 13:38:43,943 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 13:38:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:44,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 13:38:44,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:44,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:38:44,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 13:38:44,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:44,715 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 50 treesize of output 31 [2023-12-24 13:38:45,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:45,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 55 [2023-12-24 13:38:45,461 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 27 treesize of output 15 [2023-12-24 13:38:45,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:45,771 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 87 treesize of output 77 [2023-12-24 13:38:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 467 proven. 57 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-24 13:38:46,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:47,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:38:47,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155860744] [2023-12-24 13:38:47,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155860744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:47,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [171214734] [2023-12-24 13:38:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:38:47,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:38:47,368 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:38:47,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-24 13:38:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:47,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 13:38:47,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:48,234 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 15 treesize of output 1 [2023-12-24 13:38:48,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-24 13:38:48,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:48,972 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 31 treesize of output 33 [2023-12-24 13:38:49,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:49,198 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 39 treesize of output 44 [2023-12-24 13:38:49,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 13:38:49,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:49,932 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 73 treesize of output 69 [2023-12-24 13:38:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 439 proven. 45 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-24 13:38:50,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:38:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [171214734] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:38:50,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:38:50,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 21] total 49 [2023-12-24 13:38:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304555740] [2023-12-24 13:38:50,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:38:50,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-24 13:38:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:38:50,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-24 13:38:50,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=3303, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 13:38:50,577 INFO L87 Difference]: Start difference. First operand 875 states and 1256 transitions. Second operand has 49 states, 41 states have (on average 3.317073170731707) internal successors, (136), 45 states have internal predecessors, (136), 18 states have call successors, (38), 11 states have call predecessors, (38), 18 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-24 13:38:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:38:58,896 INFO L93 Difference]: Finished difference Result 1951 states and 2746 transitions. [2023-12-24 13:38:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 13:38:58,897 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 41 states have (on average 3.317073170731707) internal successors, (136), 45 states have internal predecessors, (136), 18 states have call successors, (38), 11 states have call predecessors, (38), 18 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) Word has length 146 [2023-12-24 13:38:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:38:58,898 INFO L225 Difference]: With dead ends: 1951 [2023-12-24 13:38:58,899 INFO L226 Difference]: Without dead ends: 1077 [2023-12-24 13:38:58,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1674, Invalid=10316, Unknown=0, NotChecked=0, Total=11990 [2023-12-24 13:38:58,901 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1017 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 3931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:38:58,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 3106 Invalid, 3931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 13:38:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-12-24 13:38:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 608. [2023-12-24 13:38:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 554 states have (on average 1.431407942238267) internal successors, (793), 554 states have internal predecessors, (793), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:38:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 869 transitions. [2023-12-24 13:38:58,962 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 869 transitions. Word has length 146 [2023-12-24 13:38:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:38:58,963 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 869 transitions. [2023-12-24 13:38:58,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 41 states have (on average 3.317073170731707) internal successors, (136), 45 states have internal predecessors, (136), 18 states have call successors, (38), 11 states have call predecessors, (38), 18 states have return successors, (38), 14 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-24 13:38:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 869 transitions. [2023-12-24 13:38:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 13:38:58,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:38:58,964 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:38:58,973 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 13:38:59,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-12-24 13:38:59,371 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=3,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:38:59,371 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:38:59,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:38:59,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1055546625, now seen corresponding path program 1 times [2023-12-24 13:38:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:38:59,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526630265] [2023-12-24 13:38:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:38:59,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:38:59,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:38:59,373 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 13:38:59,373 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 13:38:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:38:59,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:38:59,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:38:59,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:38:59,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:38:59,733 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 13:38:59,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:59,862 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 54 treesize of output 53 [2023-12-24 13:38:59,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:38:59,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 56 [2023-12-24 13:39:00,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:00,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 34 [2023-12-24 13:39:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2023-12-24 13:39:00,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:39:00,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526630265] [2023-12-24 13:39:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526630265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:39:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:39:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 13:39:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675918294] [2023-12-24 13:39:00,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:00,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:39:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:39:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:39:00,134 INFO L87 Difference]: Start difference. First operand 608 states and 869 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 13:39:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:01,812 INFO L93 Difference]: Finished difference Result 1020 states and 1452 transitions. [2023-12-24 13:39:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 13:39:01,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 146 [2023-12-24 13:39:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:01,815 INFO L225 Difference]: With dead ends: 1020 [2023-12-24 13:39:01,815 INFO L226 Difference]: Without dead ends: 719 [2023-12-24 13:39:01,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:39:01,815 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 403 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:01,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1328 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 13:39:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-12-24 13:39:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 605. [2023-12-24 13:39:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 551 states have (on average 1.4337568058076224) internal successors, (790), 551 states have internal predecessors, (790), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 866 transitions. [2023-12-24 13:39:01,865 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 866 transitions. Word has length 146 [2023-12-24 13:39:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:01,865 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 866 transitions. [2023-12-24 13:39:01,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 13:39:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 866 transitions. [2023-12-24 13:39:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 13:39:01,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:01,866 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:01,875 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 (36)] Ended with exit code 0 [2023-12-24 13:39:02,072 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 13:39:02,073 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:02,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1489965367, now seen corresponding path program 1 times [2023-12-24 13:39:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96464270] [2023-12-24 13:39:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:02,074 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 13:39:02,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:02,075 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 13:39:02,077 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 13:39:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:02,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-24 13:39:02,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:02,810 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 29 treesize of output 17 [2023-12-24 13:39:02,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:39:02,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 13:39:03,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:03,359 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 45 treesize of output 41 [2023-12-24 13:39:03,953 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 71 treesize of output 49 [2023-12-24 13:39:06,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:06,024 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 158 treesize of output 112 [2023-12-24 13:39:07,388 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 55 treesize of output 43 [2023-12-24 13:39:08,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:08,301 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 188 treesize of output 84 [2023-12-24 13:39:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 155 proven. 373 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-24 13:39:09,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:11,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96464270] [2023-12-24 13:39:11,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96464270] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:11,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:11,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [46] total 59 [2023-12-24 13:39:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743578125] [2023-12-24 13:39:11,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:11,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 13:39:11,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:11,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 13:39:11,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=3160, Unknown=0, NotChecked=0, Total=3422 [2023-12-24 13:39:11,398 INFO L87 Difference]: Start difference. First operand 605 states and 866 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:15,321 INFO L93 Difference]: Finished difference Result 1551 states and 2215 transitions. [2023-12-24 13:39:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 13:39:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-12-24 13:39:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:15,323 INFO L225 Difference]: With dead ends: 1551 [2023-12-24 13:39:15,323 INFO L226 Difference]: Without dead ends: 947 [2023-12-24 13:39:15,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=443, Invalid=5107, Unknown=0, NotChecked=0, Total=5550 [2023-12-24 13:39:15,325 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 604 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:15,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 2162 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 13:39:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-12-24 13:39:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 608. [2023-12-24 13:39:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 554 states have (on average 1.4332129963898916) internal successors, (794), 554 states have internal predecessors, (794), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 870 transitions. [2023-12-24 13:39:15,378 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 870 transitions. Word has length 148 [2023-12-24 13:39:15,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:15,378 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 870 transitions. [2023-12-24 13:39:15,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 870 transitions. [2023-12-24 13:39:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 13:39:15,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:15,379 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:15,387 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 (37)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:15,579 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 13:39:15,579 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:15,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1748130805, now seen corresponding path program 1 times [2023-12-24 13:39:15,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:15,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461763352] [2023-12-24 13:39:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:15,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:15,581 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 13:39:15,582 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 13:39:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:15,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:39:15,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:15,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:15,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-24 13:39:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:15,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:39:15,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461763352] [2023-12-24 13:39:15,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461763352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:39:15,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:39:15,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:39:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985757580] [2023-12-24 13:39:15,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:15,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:39:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:39:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:39:15,844 INFO L87 Difference]: Start difference. First operand 608 states and 870 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:16,171 INFO L93 Difference]: Finished difference Result 1486 states and 2103 transitions. [2023-12-24 13:39:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:39:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-12-24 13:39:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:16,173 INFO L225 Difference]: With dead ends: 1486 [2023-12-24 13:39:16,173 INFO L226 Difference]: Without dead ends: 879 [2023-12-24 13:39:16,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 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 13:39:16,174 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 241 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:16,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 510 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:39:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-24 13:39:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 608. [2023-12-24 13:39:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 554 states have (on average 1.4277978339350181) internal successors, (791), 554 states have internal predecessors, (791), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 867 transitions. [2023-12-24 13:39:16,226 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 867 transitions. Word has length 148 [2023-12-24 13:39:16,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:16,226 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 867 transitions. [2023-12-24 13:39:16,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 867 transitions. [2023-12-24 13:39:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 13:39:16,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:16,227 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:16,236 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 13:39:16,427 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 13:39:16,428 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:16,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:16,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1271110649, now seen corresponding path program 1 times [2023-12-24 13:39:16,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:16,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393637071] [2023-12-24 13:39:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:16,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:16,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:16,430 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 13:39:16,430 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 13:39:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:16,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 13:39:16,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:16,789 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 13:39:17,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:39:17,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 13:39:18,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:18,049 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 98 treesize of output 70 [2023-12-24 13:39:18,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:18,212 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 113 treesize of output 73 [2023-12-24 13:39:18,391 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 55 treesize of output 43 [2023-12-24 13:39:18,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:18,865 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 121 treesize of output 55 [2023-12-24 13:39:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 444 proven. 42 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-24 13:39:19,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:20,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393637071] [2023-12-24 13:39:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393637071] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:20,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:20,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [33] total 44 [2023-12-24 13:39:20,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943766394] [2023-12-24 13:39:20,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:20,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 13:39:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 13:39:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 13:39:20,540 INFO L87 Difference]: Start difference. First operand 608 states and 867 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:23,245 INFO L93 Difference]: Finished difference Result 1135 states and 1616 transitions. [2023-12-24 13:39:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 13:39:23,246 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-12-24 13:39:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:23,247 INFO L225 Difference]: With dead ends: 1135 [2023-12-24 13:39:23,247 INFO L226 Difference]: Without dead ends: 835 [2023-12-24 13:39:23,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=273, Invalid=2807, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 13:39:23,248 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 414 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:23,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1973 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 13:39:23,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-12-24 13:39:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 608. [2023-12-24 13:39:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 554 states have (on average 1.4277978339350181) internal successors, (791), 554 states have internal predecessors, (791), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 867 transitions. [2023-12-24 13:39:23,299 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 867 transitions. Word has length 148 [2023-12-24 13:39:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:23,299 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 867 transitions. [2023-12-24 13:39:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 867 transitions. [2023-12-24 13:39:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 13:39:23,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:23,300 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:23,309 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 13:39:23,506 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 13:39:23,507 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:23,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash -934130933, now seen corresponding path program 1 times [2023-12-24 13:39:23,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:23,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355713533] [2023-12-24 13:39:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:23,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:23,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:23,509 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 13:39:23,510 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 13:39:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:23,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:39:23,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:23,741 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 13:39:24,182 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 27 treesize of output 19 [2023-12-24 13:39:24,209 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 17 treesize of output 13 [2023-12-24 13:39:24,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:24,495 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 70 treesize of output 32 [2023-12-24 13:39:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:39:24,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:24,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355713533] [2023-12-24 13:39:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355713533] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:24,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 22 [2023-12-24 13:39:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239049493] [2023-12-24 13:39:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:24,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:39:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:39:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:39:24,749 INFO L87 Difference]: Start difference. First operand 608 states and 867 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:25,074 INFO L93 Difference]: Finished difference Result 1458 states and 2079 transitions. [2023-12-24 13:39:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:39:25,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-12-24 13:39:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:25,076 INFO L225 Difference]: With dead ends: 1458 [2023-12-24 13:39:25,076 INFO L226 Difference]: Without dead ends: 851 [2023-12-24 13:39:25,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:39:25,078 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 243 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:25,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 499 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:39:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-24 13:39:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 725. [2023-12-24 13:39:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 671 states have (on average 1.4411326378539493) internal successors, (967), 671 states have internal predecessors, (967), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1043 transitions. [2023-12-24 13:39:25,141 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1043 transitions. Word has length 148 [2023-12-24 13:39:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:25,141 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1043 transitions. [2023-12-24 13:39:25,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:25,141 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1043 transitions. [2023-12-24 13:39:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 13:39:25,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:25,142 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:25,150 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 13:39:25,350 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 13:39:25,351 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:25,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:25,351 INFO L85 PathProgramCache]: Analyzing trace with hash 840876429, now seen corresponding path program 1 times [2023-12-24 13:39:25,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:25,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915144945] [2023-12-24 13:39:25,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:25,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:25,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:25,353 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 13:39:25,353 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 13:39:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:25,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 13:39:25,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:25,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:39:25,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915144945] [2023-12-24 13:39:25,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915144945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:39:25,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:39:25,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:39:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888278661] [2023-12-24 13:39:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:25,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:39:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:39:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:39:25,581 INFO L87 Difference]: Start difference. First operand 725 states and 1043 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:25,660 INFO L93 Difference]: Finished difference Result 1470 states and 2116 transitions. [2023-12-24 13:39:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:39:25,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-12-24 13:39:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:25,662 INFO L225 Difference]: With dead ends: 1470 [2023-12-24 13:39:25,662 INFO L226 Difference]: Without dead ends: 746 [2023-12-24 13:39:25,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 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 13:39:25,663 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 50 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:25,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 605 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:39:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-24 13:39:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 730. [2023-12-24 13:39:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 676 states have (on average 1.4378698224852071) internal successors, (972), 676 states have internal predecessors, (972), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1048 transitions. [2023-12-24 13:39:25,715 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1048 transitions. Word has length 148 [2023-12-24 13:39:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:25,715 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1048 transitions. [2023-12-24 13:39:25,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1048 transitions. [2023-12-24 13:39:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 13:39:25,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:25,716 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:25,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-24 13:39:25,917 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 13:39:25,917 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:25,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash -800117427, now seen corresponding path program 1 times [2023-12-24 13:39:25,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:25,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954351152] [2023-12-24 13:39:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:25,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:25,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:25,919 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 13:39:25,926 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 13:39:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:26,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 13:39:26,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:26,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 13:39:26,298 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 13:39:26,326 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 13:39:26,331 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 33 treesize of output 26 [2023-12-24 13:39:26,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:26,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 35 [2023-12-24 13:39:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 178 proven. 6 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2023-12-24 13:39:26,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:26,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954351152] [2023-12-24 13:39:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954351152] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-24 13:39:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424495611] [2023-12-24 13:39:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:39:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:39:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:39:26,551 INFO L87 Difference]: Start difference. First operand 730 states and 1048 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:26,892 INFO L93 Difference]: Finished difference Result 1235 states and 1766 transitions. [2023-12-24 13:39:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:39:26,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-12-24 13:39:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:26,894 INFO L225 Difference]: With dead ends: 1235 [2023-12-24 13:39:26,894 INFO L226 Difference]: Without dead ends: 829 [2023-12-24 13:39:26,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:39:26,895 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 175 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:26,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1106 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:39:26,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-24 13:39:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 729. [2023-12-24 13:39:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 675 states have (on average 1.4385185185185185) internal successors, (971), 675 states have internal predecessors, (971), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1047 transitions. [2023-12-24 13:39:26,955 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1047 transitions. Word has length 148 [2023-12-24 13:39:26,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:26,956 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1047 transitions. [2023-12-24 13:39:26,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1047 transitions. [2023-12-24 13:39:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 13:39:26,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:26,956 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:26,962 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 13:39:27,157 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 13:39:27,157 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:27,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash 289580079, now seen corresponding path program 1 times [2023-12-24 13:39:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:27,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801557285] [2023-12-24 13:39:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:27,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:27,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:27,159 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 13:39:27,162 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 13:39:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:27,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-24 13:39:27,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:27,873 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 29 treesize of output 17 [2023-12-24 13:39:27,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-24 13:39:28,055 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 29 treesize of output 13 [2023-12-24 13:39:28,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:28,298 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 13:39:28,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 13:39:29,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2023-12-24 13:39:29,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:29,600 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 101 treesize of output 76 [2023-12-24 13:39:30,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:30,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 58 [2023-12-24 13:39:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 149 proven. 376 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-24 13:39:30,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:32,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801557285] [2023-12-24 13:39:32,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801557285] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:32,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:32,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [39] total 51 [2023-12-24 13:39:32,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753901] [2023-12-24 13:39:32,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:32,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 13:39:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 13:39:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2355, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 13:39:32,091 INFO L87 Difference]: Start difference. First operand 729 states and 1047 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:34,269 INFO L93 Difference]: Finished difference Result 1791 states and 2530 transitions. [2023-12-24 13:39:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 13:39:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2023-12-24 13:39:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:34,271 INFO L225 Difference]: With dead ends: 1791 [2023-12-24 13:39:34,271 INFO L226 Difference]: Without dead ends: 1063 [2023-12-24 13:39:34,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2023-12-24 13:39:34,273 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 568 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:34,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 2426 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 13:39:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-12-24 13:39:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 727. [2023-12-24 13:39:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 673 states have (on average 1.4398216939078752) internal successors, (969), 673 states have internal predecessors, (969), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1045 transitions. [2023-12-24 13:39:34,328 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1045 transitions. Word has length 148 [2023-12-24 13:39:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:34,328 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1045 transitions. [2023-12-24 13:39:34,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1045 transitions. [2023-12-24 13:39:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 13:39:34,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:34,329 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:34,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:34,535 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 13:39:34,536 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:34,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1393488869, now seen corresponding path program 1 times [2023-12-24 13:39:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217517579] [2023-12-24 13:39:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:34,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:34,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:34,537 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 13:39:34,539 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 13:39:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:34,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 13:39:34,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:34,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:39:34,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:34,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217517579] [2023-12-24 13:39:34,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217517579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:39:34,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:39:34,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:39:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734062355] [2023-12-24 13:39:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:34,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:39:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:39:34,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:39:34,788 INFO L87 Difference]: Start difference. First operand 727 states and 1045 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:35,072 INFO L93 Difference]: Finished difference Result 2060 states and 2909 transitions. [2023-12-24 13:39:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:39:35,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 149 [2023-12-24 13:39:35,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:35,074 INFO L225 Difference]: With dead ends: 2060 [2023-12-24 13:39:35,075 INFO L226 Difference]: Without dead ends: 1334 [2023-12-24 13:39:35,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:39:35,076 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 188 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:35,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 520 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:39:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-24 13:39:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 866. [2023-12-24 13:39:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 812 states have (on average 1.3879310344827587) internal successors, (1127), 812 states have internal predecessors, (1127), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1203 transitions. [2023-12-24 13:39:35,136 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1203 transitions. Word has length 149 [2023-12-24 13:39:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:35,137 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1203 transitions. [2023-12-24 13:39:35,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1203 transitions. [2023-12-24 13:39:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 13:39:35,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:35,138 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:35,142 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 (44)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:35,338 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 13:39:35,338 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:35,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash -196868932, now seen corresponding path program 1 times [2023-12-24 13:39:35,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:35,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357445053] [2023-12-24 13:39:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:35,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:35,340 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:35,341 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 (45)] Waiting until timeout for monitored process [2023-12-24 13:39:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:35,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 13:39:35,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:35,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:39:35,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:35,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357445053] [2023-12-24 13:39:35,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357445053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:39:35,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:39:35,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 13:39:35,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085295788] [2023-12-24 13:39:35,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:35,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 13:39:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 13:39:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:39:35,572 INFO L87 Difference]: Start difference. First operand 866 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:35,651 INFO L93 Difference]: Finished difference Result 1737 states and 2413 transitions. [2023-12-24 13:39:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 13:39:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2023-12-24 13:39:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:35,652 INFO L225 Difference]: With dead ends: 1737 [2023-12-24 13:39:35,652 INFO L226 Difference]: Without dead ends: 872 [2023-12-24 13:39:35,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 13:39:35,653 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 8 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:35,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 306 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:39:35,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-12-24 13:39:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 868. [2023-12-24 13:39:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 814 states have (on average 1.386977886977887) internal successors, (1129), 814 states have internal predecessors, (1129), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 13:39:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1205 transitions. [2023-12-24 13:39:35,712 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1205 transitions. Word has length 151 [2023-12-24 13:39:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:35,712 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1205 transitions. [2023-12-24 13:39:35,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1205 transitions. [2023-12-24 13:39:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 13:39:35,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:35,713 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:35,721 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 (45)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:35,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:35,914 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:35,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -139610630, now seen corresponding path program 1 times [2023-12-24 13:39:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026273491] [2023-12-24 13:39:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:35,915 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 13:39:35,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:35,916 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:35,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-24 13:39:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:36,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 13:39:36,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:36,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:39:36,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:39:36,665 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 43 treesize of output 30 [2023-12-24 13:39:36,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:36,821 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 71 treesize of output 35 [2023-12-24 13:39:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 308 proven. 39 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-12-24 13:39:36,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:36,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:36,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026273491] [2023-12-24 13:39:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026273491] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:36,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:36,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2023-12-24 13:39:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253526585] [2023-12-24 13:39:36,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:36,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:39:36,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:39:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-24 13:39:36,985 INFO L87 Difference]: Start difference. First operand 868 states and 1205 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:37,214 INFO L93 Difference]: Finished difference Result 1385 states and 1902 transitions. [2023-12-24 13:39:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:39:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2023-12-24 13:39:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:37,217 INFO L225 Difference]: With dead ends: 1385 [2023-12-24 13:39:37,217 INFO L226 Difference]: Without dead ends: 1383 [2023-12-24 13:39:37,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:39:37,218 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 85 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:37,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 691 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:39:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-24 13:39:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1379. [2023-12-24 13:39:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1315 states have (on average 1.3718631178707223) internal successors, (1804), 1317 states have internal predecessors, (1804), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:39:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1896 transitions. [2023-12-24 13:39:37,305 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1896 transitions. Word has length 151 [2023-12-24 13:39:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:37,306 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 1896 transitions. [2023-12-24 13:39:37,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1896 transitions. [2023-12-24 13:39:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 13:39:37,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:37,307 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:37,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:37,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:37,514 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:37,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash -877852821, now seen corresponding path program 1 times [2023-12-24 13:39:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:37,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069748434] [2023-12-24 13:39:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:37,515 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:37,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-24 13:39:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:37,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 13:39:37,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:37,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 13:39:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:37,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:39:37,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069748434] [2023-12-24 13:39:37,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069748434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:39:37,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:39:37,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 13:39:37,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160235812] [2023-12-24 13:39:37,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:37,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 13:39:37,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:37,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 13:39:37,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:39:37,786 INFO L87 Difference]: Start difference. First operand 1379 states and 1896 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:37,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:37,900 INFO L93 Difference]: Finished difference Result 2757 states and 3791 transitions. [2023-12-24 13:39:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 13:39:37,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2023-12-24 13:39:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:37,902 INFO L225 Difference]: With dead ends: 2757 [2023-12-24 13:39:37,903 INFO L226 Difference]: Without dead ends: 1379 [2023-12-24 13:39:37,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:39:37,904 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:37,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:39:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2023-12-24 13:39:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2023-12-24 13:39:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1315 states have (on average 1.2897338403041825) internal successors, (1696), 1317 states have internal predecessors, (1696), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:39:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1788 transitions. [2023-12-24 13:39:37,985 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1788 transitions. Word has length 151 [2023-12-24 13:39:37,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:37,985 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 1788 transitions. [2023-12-24 13:39:37,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1788 transitions. [2023-12-24 13:39:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 13:39:37,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:37,986 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:37,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:38,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:38,192 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:38,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:38,192 INFO L85 PathProgramCache]: Analyzing trace with hash -894607103, now seen corresponding path program 1 times [2023-12-24 13:39:38,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:38,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056159772] [2023-12-24 13:39:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:38,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:38,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:38,193 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:38,194 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 (48)] Waiting until timeout for monitored process [2023-12-24 13:39:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:38,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 13:39:38,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:38,742 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 44 treesize of output 31 [2023-12-24 13:39:38,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:38,772 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 50 treesize of output 20 [2023-12-24 13:39:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 332 proven. 66 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-24 13:39:38,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 66 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-12-24 13:39:39,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:39,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056159772] [2023-12-24 13:39:39,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056159772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 13:39:39,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:39:39,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2023-12-24 13:39:39,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052404241] [2023-12-24 13:39:39,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:39:39,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 13:39:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 13:39:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:39:39,062 INFO L87 Difference]: Start difference. First operand 1379 states and 1788 transitions. Second operand has 18 states, 14 states have (on average 7.214285714285714) internal successors, (101), 18 states have internal predecessors, (101), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 13:39:40,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:40,438 INFO L93 Difference]: Finished difference Result 3064 states and 4008 transitions. [2023-12-24 13:39:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 13:39:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 7.214285714285714) internal successors, (101), 18 states have internal predecessors, (101), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 7 states have call successors, (32) Word has length 152 [2023-12-24 13:39:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:40,440 INFO L225 Difference]: With dead ends: 3064 [2023-12-24 13:39:40,440 INFO L226 Difference]: Without dead ends: 1686 [2023-12-24 13:39:40,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1340, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 13:39:40,442 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 399 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:40,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1833 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 13:39:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-12-24 13:39:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1318. [2023-12-24 13:39:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1232 states have (on average 1.2767857142857142) internal successors, (1573), 1234 states have internal predecessors, (1573), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 13:39:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1685 transitions. [2023-12-24 13:39:40,577 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1685 transitions. Word has length 152 [2023-12-24 13:39:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:40,577 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 1685 transitions. [2023-12-24 13:39:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 7.214285714285714) internal successors, (101), 18 states have internal predecessors, (101), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 13:39:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1685 transitions. [2023-12-24 13:39:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 13:39:40,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:40,578 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:40,585 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 (48)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:40,784 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:40,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 10348004, now seen corresponding path program 1 times [2023-12-24 13:39:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474887120] [2023-12-24 13:39:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:40,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:40,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:40,785 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:40,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-12-24 13:39:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:41,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 13:39:41,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:41,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:39:41,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:41,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474887120] [2023-12-24 13:39:41,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474887120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:39:41,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:39:41,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:39:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611152912] [2023-12-24 13:39:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:39:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:39:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:39:41,062 INFO L87 Difference]: Start difference. First operand 1318 states and 1685 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:41,464 INFO L93 Difference]: Finished difference Result 3221 states and 4150 transitions. [2023-12-24 13:39:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:39:41,465 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2023-12-24 13:39:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:41,467 INFO L225 Difference]: With dead ends: 3221 [2023-12-24 13:39:41,467 INFO L226 Difference]: Without dead ends: 1904 [2023-12-24 13:39:41,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 13:39:41,469 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 167 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:41,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 889 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:39:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2023-12-24 13:39:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1318. [2023-12-24 13:39:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1232 states have (on average 1.2670454545454546) internal successors, (1561), 1234 states have internal predecessors, (1561), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 13:39:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1673 transitions. [2023-12-24 13:39:41,603 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1673 transitions. Word has length 152 [2023-12-24 13:39:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:41,603 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 1673 transitions. [2023-12-24 13:39:41,603 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1673 transitions. [2023-12-24 13:39:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 13:39:41,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:41,604 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:41,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:41,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:41,810 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:41,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1762421266, now seen corresponding path program 1 times [2023-12-24 13:39:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:41,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388146693] [2023-12-24 13:39:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:41,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:41,812 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:41,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-12-24 13:39:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:42,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 13:39:42,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:42,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 13:39:42,244 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 32 treesize of output 27 [2023-12-24 13:39:42,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:42,329 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 40 [2023-12-24 13:39:42,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:42,437 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 43 [2023-12-24 13:39:43,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:43,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 53 [2023-12-24 13:39:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 208 proven. 51 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-12-24 13:39:43,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:43,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:43,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388146693] [2023-12-24 13:39:43,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388146693] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:43,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:43,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2023-12-24 13:39:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698224094] [2023-12-24 13:39:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:43,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:39:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:43,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:39:43,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-24 13:39:43,479 INFO L87 Difference]: Start difference. First operand 1318 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:43,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:43,701 INFO L93 Difference]: Finished difference Result 3528 states and 4473 transitions. [2023-12-24 13:39:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:39:43,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-12-24 13:39:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:43,704 INFO L225 Difference]: With dead ends: 3528 [2023-12-24 13:39:43,704 INFO L226 Difference]: Without dead ends: 2211 [2023-12-24 13:39:43,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-24 13:39:43,705 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 99 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:43,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 415 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:39:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2023-12-24 13:39:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2155. [2023-12-24 13:39:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2069 states have (on average 1.263412276462059) internal successors, (2614), 2071 states have internal predecessors, (2614), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 13:39:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2726 transitions. [2023-12-24 13:39:43,843 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2726 transitions. Word has length 153 [2023-12-24 13:39:43,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:43,844 INFO L495 AbstractCegarLoop]: Abstraction has 2155 states and 2726 transitions. [2023-12-24 13:39:43,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2726 transitions. [2023-12-24 13:39:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 13:39:43,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:43,845 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:43,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:44,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:44,052 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:44,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1723199404, now seen corresponding path program 1 times [2023-12-24 13:39:44,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:44,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234746404] [2023-12-24 13:39:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:44,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:44,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:44,055 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:44,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-24 13:39:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:44,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 13:39:44,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:44,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:39:44,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:39:44,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 13:39:44,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:44,912 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 38 [2023-12-24 13:39:45,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:45,079 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 55 treesize of output 25 [2023-12-24 13:39:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 214 proven. 45 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-12-24 13:39:45,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:39:45,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:45,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234746404] [2023-12-24 13:39:45,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234746404] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:45,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:39:45,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-12-24 13:39:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264009902] [2023-12-24 13:39:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:39:45,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:39:45,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:39:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:39:45,185 INFO L87 Difference]: Start difference. First operand 2155 states and 2726 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:45,439 INFO L93 Difference]: Finished difference Result 4808 states and 6059 transitions. [2023-12-24 13:39:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:39:45,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-12-24 13:39:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:45,447 INFO L225 Difference]: With dead ends: 4808 [2023-12-24 13:39:45,447 INFO L226 Difference]: Without dead ends: 2654 [2023-12-24 13:39:45,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-24 13:39:45,450 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 89 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:45,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 418 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:39:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2023-12-24 13:39:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2646. [2023-12-24 13:39:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2646 states, 2554 states have (on average 1.254894283476899) internal successors, (3205), 2558 states have internal predecessors, (3205), 60 states have call successors, (60), 31 states have call predecessors, (60), 31 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 13:39:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3325 transitions. [2023-12-24 13:39:45,635 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3325 transitions. Word has length 153 [2023-12-24 13:39:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:45,635 INFO L495 AbstractCegarLoop]: Abstraction has 2646 states and 3325 transitions. [2023-12-24 13:39:45,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:39:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3325 transitions. [2023-12-24 13:39:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 13:39:45,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:45,637 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:45,650 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 (51)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:45,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:45,851 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:45,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2114642569, now seen corresponding path program 1 times [2023-12-24 13:39:45,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:45,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103178130] [2023-12-24 13:39:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:45,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:45,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:45,853 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:45,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-12-24 13:39:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:46,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 13:39:46,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:46,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:39:46,304 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 13:39:46,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:46,738 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 43 treesize of output 39 [2023-12-24 13:39:46,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:46,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 19 [2023-12-24 13:39:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 288 proven. 39 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-12-24 13:39:46,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 15 proven. 39 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 13:39:46,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:46,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103178130] [2023-12-24 13:39:46,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103178130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 13:39:46,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:39:46,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-12-24 13:39:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631365543] [2023-12-24 13:39:46,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:39:46,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 13:39:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 13:39:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-24 13:39:46,991 INFO L87 Difference]: Start difference. First operand 2646 states and 3325 transitions. Second operand has 14 states, 12 states have (on average 8.333333333333334) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 3 states have call predecessors, (33), 5 states have call successors, (33) [2023-12-24 13:39:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:47,977 INFO L93 Difference]: Finished difference Result 5009 states and 6395 transitions. [2023-12-24 13:39:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 13:39:47,977 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.333333333333334) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 3 states have call predecessors, (33), 5 states have call successors, (33) Word has length 154 [2023-12-24 13:39:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:47,980 INFO L225 Difference]: With dead ends: 5009 [2023-12-24 13:39:47,980 INFO L226 Difference]: Without dead ends: 2364 [2023-12-24 13:39:47,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2023-12-24 13:39:47,982 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 490 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:47,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 652 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:39:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2023-12-24 13:39:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 1830. [2023-12-24 13:39:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1762 states have (on average 1.224177071509648) internal successors, (2157), 1764 states have internal predecessors, (2157), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:39:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2241 transitions. [2023-12-24 13:39:48,101 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2241 transitions. Word has length 154 [2023-12-24 13:39:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:48,101 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 2241 transitions. [2023-12-24 13:39:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.333333333333334) internal successors, (100), 14 states have internal predecessors, (100), 5 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 3 states have call predecessors, (33), 5 states have call successors, (33) [2023-12-24 13:39:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2241 transitions. [2023-12-24 13:39:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 13:39:48,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:48,102 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:48,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:48,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:48,309 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:48,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1536522718, now seen corresponding path program 1 times [2023-12-24 13:39:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032756626] [2023-12-24 13:39:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:48,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:48,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:48,311 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:48,312 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 (53)] Waiting until timeout for monitored process [2023-12-24 13:39:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:48,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 13:39:48,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:48,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:39:49,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:49,430 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 188 treesize of output 98 [2023-12-24 13:39:49,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:49,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 134 [2023-12-24 13:39:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 13:39:49,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:50,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032756626] [2023-12-24 13:39:50,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032756626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [704843641] [2023-12-24 13:39:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:50,083 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:39:50,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:39:50,084 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:39:50,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2023-12-24 13:39:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:50,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:39:50,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:51,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 13:39:52,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:52,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 100 [2023-12-24 13:39:53,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:53,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 299 treesize of output 151 [2023-12-24 13:39:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 13:39:53,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [704843641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:39:53,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:39:53,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-24 13:39:53,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737507551] [2023-12-24 13:39:53,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:39:53,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 13:39:53,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:53,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 13:39:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:39:53,307 INFO L87 Difference]: Start difference. First operand 1830 states and 2241 transitions. Second operand has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 18 states have internal predecessors, (122), 4 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 13:39:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:39:57,118 INFO L93 Difference]: Finished difference Result 6274 states and 7666 transitions. [2023-12-24 13:39:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 13:39:57,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 18 states have internal predecessors, (122), 4 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 155 [2023-12-24 13:39:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:39:57,122 INFO L225 Difference]: With dead ends: 6274 [2023-12-24 13:39:57,122 INFO L226 Difference]: Without dead ends: 4445 [2023-12-24 13:39:57,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=542, Invalid=2214, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 13:39:57,124 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 817 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:39:57,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 2853 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 13:39:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4445 states. [2023-12-24 13:39:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4445 to 2806. [2023-12-24 13:39:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2701 states have (on average 1.2554609403924473) internal successors, (3391), 2703 states have internal predecessors, (3391), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:39:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3519 transitions. [2023-12-24 13:39:57,305 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3519 transitions. Word has length 155 [2023-12-24 13:39:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:39:57,305 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3519 transitions. [2023-12-24 13:39:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 18 states have internal predecessors, (122), 4 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 13:39:57,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3519 transitions. [2023-12-24 13:39:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 13:39:57,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:39:57,307 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:39:57,315 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 (53)] Forceful destruction successful, exit code 0 [2023-12-24 13:39:57,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (54)] Ended with exit code 0 [2023-12-24 13:39:57,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:39:57,708 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:39:57,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:39:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1549285422, now seen corresponding path program 1 times [2023-12-24 13:39:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:39:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88714454] [2023-12-24 13:39:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:39:57,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:39:57,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:39:57,710 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:39:57,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2023-12-24 13:39:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:39:57,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 13:39:57,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:39:58,290 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 44 treesize of output 31 [2023-12-24 13:39:58,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:39:58,386 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 50 treesize of output 20 [2023-12-24 13:39:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 332 proven. 66 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-24 13:39:58,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:39:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 66 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-12-24 13:39:58,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:39:58,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88714454] [2023-12-24 13:39:58,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88714454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 13:39:58,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:39:58,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2023-12-24 13:39:58,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438567616] [2023-12-24 13:39:58,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:39:58,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 13:39:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:39:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 13:39:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:39:58,676 INFO L87 Difference]: Start difference. First operand 2806 states and 3519 transitions. Second operand has 18 states, 14 states have (on average 8.214285714285714) internal successors, (115), 18 states have internal predecessors, (115), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 13:40:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:00,209 INFO L93 Difference]: Finished difference Result 6599 states and 8450 transitions. [2023-12-24 13:40:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 13:40:00,210 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 8.214285714285714) internal successors, (115), 18 states have internal predecessors, (115), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 7 states have call successors, (32) Word has length 155 [2023-12-24 13:40:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:00,213 INFO L225 Difference]: With dead ends: 6599 [2023-12-24 13:40:00,213 INFO L226 Difference]: Without dead ends: 3794 [2023-12-24 13:40:00,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1340, Unknown=0, NotChecked=0, Total=1722 [2023-12-24 13:40:00,216 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 530 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:00,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1551 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 13:40:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2023-12-24 13:40:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2806. [2023-12-24 13:40:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2701 states have (on average 1.2510181414291004) internal successors, (3379), 2703 states have internal predecessors, (3379), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3507 transitions. [2023-12-24 13:40:00,381 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3507 transitions. Word has length 155 [2023-12-24 13:40:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:00,382 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3507 transitions. [2023-12-24 13:40:00,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 8.214285714285714) internal successors, (115), 18 states have internal predecessors, (115), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (32), 3 states have call predecessors, (32), 7 states have call successors, (32) [2023-12-24 13:40:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3507 transitions. [2023-12-24 13:40:00,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 13:40:00,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:00,383 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:00,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:00,584 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1317668000, now seen corresponding path program 1 times [2023-12-24 13:40:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958092030] [2023-12-24 13:40:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:00,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:00,586 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2023-12-24 13:40:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:00,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:40:00,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:00,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:00,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2023-12-24 13:40:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:00,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:40:00,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:00,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958092030] [2023-12-24 13:40:00,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958092030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:40:00,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:40:00,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:40:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538418725] [2023-12-24 13:40:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:00,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:40:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:40:00,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:40:00,924 INFO L87 Difference]: Start difference. First operand 2806 states and 3507 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:01,722 INFO L93 Difference]: Finished difference Result 6056 states and 7516 transitions. [2023-12-24 13:40:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:40:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2023-12-24 13:40:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:01,726 INFO L225 Difference]: With dead ends: 6056 [2023-12-24 13:40:01,726 INFO L226 Difference]: Without dead ends: 3251 [2023-12-24 13:40:01,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-24 13:40:01,729 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 136 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:01,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1055 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:40:01,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2023-12-24 13:40:01,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2612. [2023-12-24 13:40:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2507 states have (on average 1.216194654966095) internal successors, (3049), 2509 states have internal predecessors, (3049), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:01,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 3177 transitions. [2023-12-24 13:40:01,887 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 3177 transitions. Word has length 155 [2023-12-24 13:40:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:01,887 INFO L495 AbstractCegarLoop]: Abstraction has 2612 states and 3177 transitions. [2023-12-24 13:40:01,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 3177 transitions. [2023-12-24 13:40:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 13:40:01,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:01,889 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:01,894 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 (56)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:02,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:02,089 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:02,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -10612105, now seen corresponding path program 1 times [2023-12-24 13:40:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:02,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81764794] [2023-12-24 13:40:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:02,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:02,091 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:02,092 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 (57)] Waiting until timeout for monitored process [2023-12-24 13:40:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:02,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:40:02,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:02,359 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 13:40:02,784 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 21 treesize of output 17 [2023-12-24 13:40:03,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:03,077 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 51 treesize of output 31 [2023-12-24 13:40:03,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2023-12-24 13:40:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:40:03,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:03,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2023-12-24 13:40:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:03,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:03,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81764794] [2023-12-24 13:40:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81764794] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:03,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 24 [2023-12-24 13:40:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353315550] [2023-12-24 13:40:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:03,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:40:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:40:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:40:03,459 INFO L87 Difference]: Start difference. First operand 2612 states and 3177 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:04,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:04,563 INFO L93 Difference]: Finished difference Result 6238 states and 7499 transitions. [2023-12-24 13:40:04,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:40:04,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2023-12-24 13:40:04,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:04,566 INFO L225 Difference]: With dead ends: 6238 [2023-12-24 13:40:04,566 INFO L226 Difference]: Without dead ends: 3627 [2023-12-24 13:40:04,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-12-24 13:40:04,569 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 229 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:04,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 787 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 13:40:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2023-12-24 13:40:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3110. [2023-12-24 13:40:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 3005 states have (on average 1.1990016638935108) internal successors, (3603), 3007 states have internal predecessors, (3603), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 3731 transitions. [2023-12-24 13:40:04,733 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 3731 transitions. Word has length 155 [2023-12-24 13:40:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:04,733 INFO L495 AbstractCegarLoop]: Abstraction has 3110 states and 3731 transitions. [2023-12-24 13:40:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 3731 transitions. [2023-12-24 13:40:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 13:40:04,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:04,735 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:04,742 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 (57)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:04,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:04,940 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:04,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1418081244, now seen corresponding path program 1 times [2023-12-24 13:40:04,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:04,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912274756] [2023-12-24 13:40:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:04,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:04,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:04,942 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:04,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2023-12-24 13:40:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:05,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 13:40:05,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-24 13:40:05,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:40:05,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:05,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912274756] [2023-12-24 13:40:05,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912274756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:40:05,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:40:05,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 13:40:05,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035278881] [2023-12-24 13:40:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:05,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 13:40:05,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 13:40:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 13:40:05,178 INFO L87 Difference]: Start difference. First operand 3110 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 13:40:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:05,378 INFO L93 Difference]: Finished difference Result 6227 states and 7473 transitions. [2023-12-24 13:40:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:40:05,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2023-12-24 13:40:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:05,381 INFO L225 Difference]: With dead ends: 6227 [2023-12-24 13:40:05,381 INFO L226 Difference]: Without dead ends: 3118 [2023-12-24 13:40:05,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:40:05,383 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 7 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:05,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 462 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 13:40:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2023-12-24 13:40:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3110. [2023-12-24 13:40:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 3005 states have (on average 1.1983361064891846) internal successors, (3601), 3007 states have internal predecessors, (3601), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 3729 transitions. [2023-12-24 13:40:05,531 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 3729 transitions. Word has length 155 [2023-12-24 13:40:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:05,531 INFO L495 AbstractCegarLoop]: Abstraction has 3110 states and 3729 transitions. [2023-12-24 13:40:05,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 13:40:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 3729 transitions. [2023-12-24 13:40:05,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:05,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:05,534 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:05,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Ended with exit code 0 [2023-12-24 13:40:05,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:05,734 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:05,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1708964785, now seen corresponding path program 1 times [2023-12-24 13:40:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:05,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052136657] [2023-12-24 13:40:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:05,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:05,736 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:05,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2023-12-24 13:40:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:06,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:40:06,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:06,034 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 13:40:06,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:06,965 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 53 treesize of output 33 [2023-12-24 13:40:06,967 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 54 treesize of output 38 [2023-12-24 13:40:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:40:07,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:07,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:07,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 1 [2023-12-24 13:40:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:07,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:07,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052136657] [2023-12-24 13:40:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052136657] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:07,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:07,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-12-24 13:40:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119104468] [2023-12-24 13:40:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:40:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:07,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:40:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2023-12-24 13:40:07,575 INFO L87 Difference]: Start difference. First operand 3110 states and 3729 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:09,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:09,375 INFO L93 Difference]: Finished difference Result 8128 states and 9678 transitions. [2023-12-24 13:40:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 13:40:09,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 13:40:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:09,379 INFO L225 Difference]: With dead ends: 8128 [2023-12-24 13:40:09,379 INFO L226 Difference]: Without dead ends: 5019 [2023-12-24 13:40:09,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 13:40:09,382 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 445 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:09,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1269 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 13:40:09,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5019 states. [2023-12-24 13:40:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5019 to 3444. [2023-12-24 13:40:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3444 states, 3339 states have (on average 1.2072476789457922) internal successors, (4031), 3341 states have internal predecessors, (4031), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 4159 transitions. [2023-12-24 13:40:09,540 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 4159 transitions. Word has length 157 [2023-12-24 13:40:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:09,540 INFO L495 AbstractCegarLoop]: Abstraction has 3444 states and 4159 transitions. [2023-12-24 13:40:09,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 4159 transitions. [2023-12-24 13:40:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:09,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:09,542 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:09,550 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 (59)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:09,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:09,748 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:09,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1084143068, now seen corresponding path program 1 times [2023-12-24 13:40:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320387568] [2023-12-24 13:40:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:09,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:09,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:09,750 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:09,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-12-24 13:40:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:10,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 13:40:10,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:10,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:40:10,204 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 13:40:10,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:10,631 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 43 treesize of output 39 [2023-12-24 13:40:10,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:10,821 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 87 treesize of output 39 [2023-12-24 13:40:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 288 proven. 39 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-12-24 13:40:10,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:11,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:11,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320387568] [2023-12-24 13:40:11,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320387568] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:11,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:11,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2023-12-24 13:40:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101624461] [2023-12-24 13:40:11,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:11,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:40:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:40:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-24 13:40:11,083 INFO L87 Difference]: Start difference. First operand 3444 states and 4159 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:11,559 INFO L93 Difference]: Finished difference Result 3506 states and 4233 transitions. [2023-12-24 13:40:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:40:11,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 13:40:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:11,562 INFO L225 Difference]: With dead ends: 3506 [2023-12-24 13:40:11,562 INFO L226 Difference]: Without dead ends: 3504 [2023-12-24 13:40:11,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:40:11,563 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 76 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:11,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 966 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:40:11,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3504 states. [2023-12-24 13:40:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 3458. [2023-12-24 13:40:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3353 states have (on average 1.2075753056963914) internal successors, (4049), 3355 states have internal predecessors, (4049), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4177 transitions. [2023-12-24 13:40:11,720 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4177 transitions. Word has length 157 [2023-12-24 13:40:11,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:11,720 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4177 transitions. [2023-12-24 13:40:11,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:11,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4177 transitions. [2023-12-24 13:40:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:11,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:11,722 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:11,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Ended with exit code 0 [2023-12-24 13:40:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:11,928 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:11,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1435816866, now seen corresponding path program 1 times [2023-12-24 13:40:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:11,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352709612] [2023-12-24 13:40:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:11,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:11,930 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:11,931 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 (61)] Waiting until timeout for monitored process [2023-12-24 13:40:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:12,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:40:12,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:12,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:12,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-24 13:40:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:12,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:40:12,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:12,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352709612] [2023-12-24 13:40:12,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352709612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:40:12,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:40:12,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:40:12,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867747010] [2023-12-24 13:40:12,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:12,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:40:12,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:40:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:40:12,310 INFO L87 Difference]: Start difference. First operand 3458 states and 4177 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:12,889 INFO L93 Difference]: Finished difference Result 7131 states and 8589 transitions. [2023-12-24 13:40:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:40:12,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 13:40:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:12,892 INFO L225 Difference]: With dead ends: 7131 [2023-12-24 13:40:12,892 INFO L226 Difference]: Without dead ends: 3674 [2023-12-24 13:40:12,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:40:12,895 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 86 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:12,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 558 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:40:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2023-12-24 13:40:13,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3458. [2023-12-24 13:40:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3353 states have (on average 1.2069788249328959) internal successors, (4047), 3355 states have internal predecessors, (4047), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4175 transitions. [2023-12-24 13:40:13,049 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4175 transitions. Word has length 157 [2023-12-24 13:40:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:13,049 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4175 transitions. [2023-12-24 13:40:13,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4175 transitions. [2023-12-24 13:40:13,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:13,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:13,051 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:13,056 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 (61)] Ended with exit code 0 [2023-12-24 13:40:13,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:13,251 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:13,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash -141621457, now seen corresponding path program 1 times [2023-12-24 13:40:13,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:13,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048257015] [2023-12-24 13:40:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:13,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:13,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:13,253 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:13,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2023-12-24 13:40:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:13,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 13:40:13,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:13,554 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 13:40:15,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:15,201 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 93 treesize of output 53 [2023-12-24 13:40:15,204 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 78 treesize of output 54 [2023-12-24 13:40:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:40:15,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:15,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048257015] [2023-12-24 13:40:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048257015] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:15,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:15,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [24] total 34 [2023-12-24 13:40:15,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447039763] [2023-12-24 13:40:15,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:15,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:40:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:40:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 13:40:15,926 INFO L87 Difference]: Start difference. First operand 3458 states and 4175 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:17,734 INFO L93 Difference]: Finished difference Result 8802 states and 10461 transitions. [2023-12-24 13:40:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 13:40:17,735 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 13:40:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:17,740 INFO L225 Difference]: With dead ends: 8802 [2023-12-24 13:40:17,740 INFO L226 Difference]: Without dead ends: 5345 [2023-12-24 13:40:17,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=333, Invalid=1737, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 13:40:17,743 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 625 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1389 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 13:40:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2023-12-24 13:40:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 3578. [2023-12-24 13:40:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3473 states have (on average 1.2009789807083213) internal successors, (4171), 3475 states have internal predecessors, (4171), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4299 transitions. [2023-12-24 13:40:17,903 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4299 transitions. Word has length 157 [2023-12-24 13:40:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:17,904 INFO L495 AbstractCegarLoop]: Abstraction has 3578 states and 4299 transitions. [2023-12-24 13:40:17,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4299 transitions. [2023-12-24 13:40:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:17,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:17,906 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:17,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:18,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:18,110 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:18,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1803275409, now seen corresponding path program 1 times [2023-12-24 13:40:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:18,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438977339] [2023-12-24 13:40:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:18,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:18,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:18,112 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:18,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2023-12-24 13:40:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:18,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 13:40:18,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:18,372 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 13:40:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:40:19,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:20,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:20,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438977339] [2023-12-24 13:40:20,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438977339] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:20,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:20,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [23] total 34 [2023-12-24 13:40:20,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655222655] [2023-12-24 13:40:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:20,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:40:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:40:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 13:40:20,514 INFO L87 Difference]: Start difference. First operand 3578 states and 4299 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:23,125 INFO L93 Difference]: Finished difference Result 9237 states and 10934 transitions. [2023-12-24 13:40:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 13:40:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 13:40:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:23,131 INFO L225 Difference]: With dead ends: 9237 [2023-12-24 13:40:23,131 INFO L226 Difference]: Without dead ends: 5660 [2023-12-24 13:40:23,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=410, Invalid=2040, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 13:40:23,136 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 593 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:23,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1924 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 13:40:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5660 states. [2023-12-24 13:40:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5660 to 3670. [2023-12-24 13:40:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3565 states have (on average 1.196914446002805) internal successors, (4267), 3567 states have internal predecessors, (4267), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 4395 transitions. [2023-12-24 13:40:23,307 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 4395 transitions. Word has length 157 [2023-12-24 13:40:23,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:23,307 INFO L495 AbstractCegarLoop]: Abstraction has 3670 states and 4395 transitions. [2023-12-24 13:40:23,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 4395 transitions. [2023-12-24 13:40:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:23,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:23,309 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:23,314 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 (63)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:23,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:23,510 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:23,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:23,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1020007697, now seen corresponding path program 1 times [2023-12-24 13:40:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562962007] [2023-12-24 13:40:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:23,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:23,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:23,512 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:23,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-12-24 13:40:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:23,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 13:40:23,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:40:25,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:26,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562962007] [2023-12-24 13:40:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562962007] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:26,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 32 [2023-12-24 13:40:26,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111772766] [2023-12-24 13:40:26,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:26,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 13:40:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 13:40:26,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2023-12-24 13:40:26,230 INFO L87 Difference]: Start difference. First operand 3670 states and 4395 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:30,116 INFO L93 Difference]: Finished difference Result 9009 states and 10668 transitions. [2023-12-24 13:40:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 13:40:30,117 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 13:40:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:30,121 INFO L225 Difference]: With dead ends: 9009 [2023-12-24 13:40:30,121 INFO L226 Difference]: Without dead ends: 5340 [2023-12-24 13:40:30,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=515, Invalid=2137, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 13:40:30,124 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 561 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:30,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 2129 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 13:40:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2023-12-24 13:40:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 3654. [2023-12-24 13:40:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3549 states have (on average 1.1978021978021978) internal successors, (4251), 3551 states have internal predecessors, (4251), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 4379 transitions. [2023-12-24 13:40:30,333 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 4379 transitions. Word has length 157 [2023-12-24 13:40:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:30,333 INFO L495 AbstractCegarLoop]: Abstraction has 3654 states and 4379 transitions. [2023-12-24 13:40:30,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 4379 transitions. [2023-12-24 13:40:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:30,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:30,336 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:30,341 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 (64)] Ended with exit code 0 [2023-12-24 13:40:30,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:30,536 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:30,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1080380595, now seen corresponding path program 1 times [2023-12-24 13:40:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:30,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863823152] [2023-12-24 13:40:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:30,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:30,538 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:30,539 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 (65)] Waiting until timeout for monitored process [2023-12-24 13:40:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:30,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 13:40:30,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:30,813 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 13:40:32,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:32,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 55 [2023-12-24 13:40:32,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2023-12-24 13:40:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:40:32,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:33,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:33,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863823152] [2023-12-24 13:40:33,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863823152] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:33,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:33,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [23] total 34 [2023-12-24 13:40:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632190168] [2023-12-24 13:40:33,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:33,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:40:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:33,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:40:33,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 13:40:33,246 INFO L87 Difference]: Start difference. First operand 3654 states and 4379 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:35,795 INFO L93 Difference]: Finished difference Result 6844 states and 8176 transitions. [2023-12-24 13:40:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 13:40:35,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2023-12-24 13:40:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:35,799 INFO L225 Difference]: With dead ends: 6844 [2023-12-24 13:40:35,799 INFO L226 Difference]: Without dead ends: 4693 [2023-12-24 13:40:35,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=389, Invalid=1867, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 13:40:35,801 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 245 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:35,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1905 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 13:40:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2023-12-24 13:40:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 3648. [2023-12-24 13:40:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3543 states have (on average 1.1981371718882303) internal successors, (4245), 3545 states have internal predecessors, (4245), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 4373 transitions. [2023-12-24 13:40:35,980 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 4373 transitions. Word has length 157 [2023-12-24 13:40:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:35,980 INFO L495 AbstractCegarLoop]: Abstraction has 3648 states and 4373 transitions. [2023-12-24 13:40:35,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 4373 transitions. [2023-12-24 13:40:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:35,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:35,983 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:35,989 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 (65)] Ended with exit code 0 [2023-12-24 13:40:36,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:36,183 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:36,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash 765719208, now seen corresponding path program 1 times [2023-12-24 13:40:36,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:36,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327080322] [2023-12-24 13:40:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:36,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:36,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:36,185 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:36,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2023-12-24 13:40:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:36,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 13:40:36,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:36,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:40:37,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:37,397 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 186 treesize of output 96 [2023-12-24 13:40:37,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:37,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 382 treesize of output 132 [2023-12-24 13:40:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 10 proven. 382 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 13:40:37,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:38,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:38,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327080322] [2023-12-24 13:40:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327080322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:38,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703463386] [2023-12-24 13:40:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:38,052 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 13:40:38,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 13:40:38,053 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 13:40:38,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2023-12-24 13:40:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:38,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 13:40:38,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:39,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 13:40:46,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:46,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 98 [2023-12-24 13:40:46,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:46,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 297 treesize of output 149 [2023-12-24 13:40:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 10 proven. 382 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 13:40:46,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:46,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1703463386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:46,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:40:46,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 25 [2023-12-24 13:40:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784140425] [2023-12-24 13:40:46,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:40:46,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 13:40:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 13:40:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=814, Unknown=1, NotChecked=0, Total=930 [2023-12-24 13:40:46,788 INFO L87 Difference]: Start difference. First operand 3648 states and 4373 transitions. Second operand has 26 states, 24 states have (on average 5.5) internal successors, (132), 23 states have internal predecessors, (132), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 13:40:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:52,164 INFO L93 Difference]: Finished difference Result 10553 states and 12583 transitions. [2023-12-24 13:40:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 13:40:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.5) internal successors, (132), 23 states have internal predecessors, (132), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) Word has length 157 [2023-12-24 13:40:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:52,169 INFO L225 Difference]: With dead ends: 10553 [2023-12-24 13:40:52,169 INFO L226 Difference]: Without dead ends: 6906 [2023-12-24 13:40:52,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 357 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=768, Invalid=3653, Unknown=1, NotChecked=0, Total=4422 [2023-12-24 13:40:52,172 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 696 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:52,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 3148 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 13:40:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2023-12-24 13:40:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 3650. [2023-12-24 13:40:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3545 states have (on average 1.1980253878702398) internal successors, (4247), 3547 states have internal predecessors, (4247), 64 states have call successors, (64), 40 states have call predecessors, (64), 40 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 13:40:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4375 transitions. [2023-12-24 13:40:52,351 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4375 transitions. Word has length 157 [2023-12-24 13:40:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:52,351 INFO L495 AbstractCegarLoop]: Abstraction has 3650 states and 4375 transitions. [2023-12-24 13:40:52,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.5) internal successors, (132), 23 states have internal predecessors, (132), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 13:40:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4375 transitions. [2023-12-24 13:40:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 13:40:52,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:52,354 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:52,362 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 (66)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:52,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (67)] Ended with exit code 0 [2023-12-24 13:40:52,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 13:40:52,755 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:52,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:52,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2139954074, now seen corresponding path program 1 times [2023-12-24 13:40:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331480810] [2023-12-24 13:40:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:52,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:52,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:52,757 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:52,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2023-12-24 13:40:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:53,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 13:40:53,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-24 13:40:53,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:40:53,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331480810] [2023-12-24 13:40:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331480810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:40:53,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:40:53,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 13:40:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590204708] [2023-12-24 13:40:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:53,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 13:40:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 13:40:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:40:53,030 INFO L87 Difference]: Start difference. First operand 3650 states and 4375 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 13:40:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:53,326 INFO L93 Difference]: Finished difference Result 6449 states and 7677 transitions. [2023-12-24 13:40:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 13:40:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 157 [2023-12-24 13:40:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:53,328 INFO L225 Difference]: With dead ends: 6449 [2023-12-24 13:40:53,328 INFO L226 Difference]: Without dead ends: 2788 [2023-12-24 13:40:53,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:40:53,330 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 7 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:53,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 621 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:40:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2023-12-24 13:40:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2764. [2023-12-24 13:40:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2696 states have (on average 1.1798961424332344) internal successors, (3181), 2698 states have internal predecessors, (3181), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:40:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3265 transitions. [2023-12-24 13:40:53,470 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3265 transitions. Word has length 157 [2023-12-24 13:40:53,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:53,470 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 3265 transitions. [2023-12-24 13:40:53,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 13:40:53,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3265 transitions. [2023-12-24 13:40:53,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 13:40:53,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:53,472 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:53,480 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 (68)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:53,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:53,673 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:53,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash 622502251, now seen corresponding path program 1 times [2023-12-24 13:40:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:53,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011100567] [2023-12-24 13:40:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:53,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:53,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:53,674 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:53,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2023-12-24 13:40:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:53,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 13:40:53,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:53,948 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 13:40:54,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:40:54,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 35 [2023-12-24 13:40:54,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2023-12-24 13:40:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:40:54,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:55,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011100567] [2023-12-24 13:40:55,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011100567] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:55,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:55,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 22 [2023-12-24 13:40:55,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748933507] [2023-12-24 13:40:55,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:55,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:40:55,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:55,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:40:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:40:55,058 INFO L87 Difference]: Start difference. First operand 2764 states and 3265 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:55,539 INFO L93 Difference]: Finished difference Result 5997 states and 7044 transitions. [2023-12-24 13:40:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:40:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 159 [2023-12-24 13:40:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:55,543 INFO L225 Difference]: With dead ends: 5997 [2023-12-24 13:40:55,543 INFO L226 Difference]: Without dead ends: 3234 [2023-12-24 13:40:55,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:40:55,545 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 148 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:55,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 538 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:40:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2023-12-24 13:40:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 2814. [2023-12-24 13:40:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2746 states have (on average 1.1722505462490895) internal successors, (3219), 2748 states have internal predecessors, (3219), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:40:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3303 transitions. [2023-12-24 13:40:55,699 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3303 transitions. Word has length 159 [2023-12-24 13:40:55,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:55,699 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 3303 transitions. [2023-12-24 13:40:55,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3303 transitions. [2023-12-24 13:40:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 13:40:55,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:55,701 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:55,706 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 (69)] Ended with exit code 0 [2023-12-24 13:40:55,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:55,902 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:55,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash -445517698, now seen corresponding path program 1 times [2023-12-24 13:40:55,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:55,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564921244] [2023-12-24 13:40:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:55,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:55,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:55,904 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:55,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2023-12-24 13:40:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:56,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 13:40:56,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:56,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:40:56,352 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 29 treesize of output 13 [2023-12-24 13:40:56,369 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 29 treesize of output 13 [2023-12-24 13:40:56,387 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 29 treesize of output 13 [2023-12-24 13:40:56,542 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 38 treesize of output 18 [2023-12-24 13:40:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 88 proven. 51 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2023-12-24 13:40:56,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:56,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564921244] [2023-12-24 13:40:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564921244] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:56,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-24 13:40:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329705705] [2023-12-24 13:40:56,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:56,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:40:56,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:40:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:40:56,704 INFO L87 Difference]: Start difference. First operand 2814 states and 3303 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:56,927 INFO L93 Difference]: Finished difference Result 5672 states and 6655 transitions. [2023-12-24 13:40:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:40:56,928 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 160 [2023-12-24 13:40:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:56,929 INFO L225 Difference]: With dead ends: 5672 [2023-12-24 13:40:56,929 INFO L226 Difference]: Without dead ends: 2859 [2023-12-24 13:40:56,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:40:56,931 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:56,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 476 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:40:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2023-12-24 13:40:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2814. [2023-12-24 13:40:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2746 states have (on average 1.1700655498907502) internal successors, (3213), 2748 states have internal predecessors, (3213), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:40:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3297 transitions. [2023-12-24 13:40:57,080 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3297 transitions. Word has length 160 [2023-12-24 13:40:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:57,080 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 3297 transitions. [2023-12-24 13:40:57,080 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3297 transitions. [2023-12-24 13:40:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 13:40:57,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:57,082 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:57,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Ended with exit code 0 [2023-12-24 13:40:57,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:57,289 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:57,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:57,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1605466300, now seen corresponding path program 1 times [2023-12-24 13:40:57,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:57,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921938230] [2023-12-24 13:40:57,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:57,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:57,290 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:57,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2023-12-24 13:40:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:57,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 13:40:57,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:57,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:40:57,746 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 13:40:57,767 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 13:40:57,954 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 13:40:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 204 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 13:40:58,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:40:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:40:58,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:40:58,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921938230] [2023-12-24 13:40:58,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921938230] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:40:58,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:40:58,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-24 13:40:58,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596885631] [2023-12-24 13:40:58,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:40:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:40:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:40:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:40:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 13:40:58,191 INFO L87 Difference]: Start difference. First operand 2814 states and 3297 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:58,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:40:58,473 INFO L93 Difference]: Finished difference Result 5681 states and 6654 transitions. [2023-12-24 13:40:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:40:58,473 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 160 [2023-12-24 13:40:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:40:58,475 INFO L225 Difference]: With dead ends: 5681 [2023-12-24 13:40:58,475 INFO L226 Difference]: Without dead ends: 2868 [2023-12-24 13:40:58,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 13:40:58,477 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:40:58,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 532 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:40:58,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2023-12-24 13:40:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2836. [2023-12-24 13:40:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2768 states have (on average 1.1683526011560694) internal successors, (3234), 2770 states have internal predecessors, (3234), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:40:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 3318 transitions. [2023-12-24 13:40:58,630 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 3318 transitions. Word has length 160 [2023-12-24 13:40:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:40:58,630 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 3318 transitions. [2023-12-24 13:40:58,630 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, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:40:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 3318 transitions. [2023-12-24 13:40:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 13:40:58,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:40:58,632 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:40:58,639 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 (71)] Forceful destruction successful, exit code 0 [2023-12-24 13:40:58,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:58,838 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:40:58,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:40:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash 613629810, now seen corresponding path program 1 times [2023-12-24 13:40:58,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:40:58,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348479927] [2023-12-24 13:40:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:40:58,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:40:58,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:40:58,840 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:40:58,841 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 (72)] Waiting until timeout for monitored process [2023-12-24 13:40:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:40:59,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 13:40:59,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:40:59,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:40:59,838 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 54 treesize of output 35 [2023-12-24 13:41:00,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:00,113 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 98 treesize of output 44 [2023-12-24 13:41:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 338 proven. 66 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-24 13:41:00,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:00,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:00,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348479927] [2023-12-24 13:41:00,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348479927] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:00,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 20 [2023-12-24 13:41:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174192941] [2023-12-24 13:41:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:41:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:41:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-24 13:41:00,369 INFO L87 Difference]: Start difference. First operand 2836 states and 3318 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:00,804 INFO L93 Difference]: Finished difference Result 2942 states and 3444 transitions. [2023-12-24 13:41:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:41:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-24 13:41:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:00,807 INFO L225 Difference]: With dead ends: 2942 [2023-12-24 13:41:00,807 INFO L226 Difference]: Without dead ends: 2940 [2023-12-24 13:41:00,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:41:00,808 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 67 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:00,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1094 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:41:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2023-12-24 13:41:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2836. [2023-12-24 13:41:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2768 states have (on average 1.1683526011560694) internal successors, (3234), 2770 states have internal predecessors, (3234), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 3318 transitions. [2023-12-24 13:41:00,969 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 3318 transitions. Word has length 162 [2023-12-24 13:41:00,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:00,969 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 3318 transitions. [2023-12-24 13:41:00,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 3318 transitions. [2023-12-24 13:41:00,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 13:41:00,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:00,971 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:00,979 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 (72)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:01,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:01,171 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:01,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash -314798057, now seen corresponding path program 1 times [2023-12-24 13:41:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:01,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801614470] [2023-12-24 13:41:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:01,172 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 13:41:01,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:01,173 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:01,174 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 (73)] Waiting until timeout for monitored process [2023-12-24 13:41:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:01,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:41:01,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:01,500 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 13:41:01,965 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 21 treesize of output 17 [2023-12-24 13:41:02,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:02,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 35 [2023-12-24 13:41:02,303 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 53 treesize of output 37 [2023-12-24 13:41:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:41:02,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:02,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2023-12-24 13:41:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:02,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801614470] [2023-12-24 13:41:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801614470] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:02,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:02,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 24 [2023-12-24 13:41:02,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221862486] [2023-12-24 13:41:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:02,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:41:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:41:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-12-24 13:41:02,734 INFO L87 Difference]: Start difference. First operand 2836 states and 3318 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:03,758 INFO L93 Difference]: Finished difference Result 6408 states and 7448 transitions. [2023-12-24 13:41:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:41:03,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 164 [2023-12-24 13:41:03,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:03,761 INFO L225 Difference]: With dead ends: 6408 [2023-12-24 13:41:03,761 INFO L226 Difference]: Without dead ends: 3573 [2023-12-24 13:41:03,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-12-24 13:41:03,763 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 220 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:03,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 649 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 13:41:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2023-12-24 13:41:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 2984. [2023-12-24 13:41:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2916 states have (on average 1.163923182441701) internal successors, (3394), 2918 states have internal predecessors, (3394), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3478 transitions. [2023-12-24 13:41:03,912 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3478 transitions. Word has length 164 [2023-12-24 13:41:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:03,912 INFO L495 AbstractCegarLoop]: Abstraction has 2984 states and 3478 transitions. [2023-12-24 13:41:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3478 transitions. [2023-12-24 13:41:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 13:41:03,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:03,914 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:03,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:04,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:04,115 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:04,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1597099415, now seen corresponding path program 1 times [2023-12-24 13:41:04,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:04,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469896940] [2023-12-24 13:41:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:04,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:04,117 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:04,119 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 (74)] Waiting until timeout for monitored process [2023-12-24 13:41:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:04,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:41:04,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:04,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:04,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2023-12-24 13:41:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:04,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:41:04,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:04,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469896940] [2023-12-24 13:41:04,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469896940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:41:04,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:41:04,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:41:04,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775948766] [2023-12-24 13:41:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:41:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:41:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:41:04,513 INFO L87 Difference]: Start difference. First operand 2984 states and 3478 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:05,164 INFO L93 Difference]: Finished difference Result 6762 states and 7825 transitions. [2023-12-24 13:41:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:41:05,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 165 [2023-12-24 13:41:05,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:05,167 INFO L225 Difference]: With dead ends: 6762 [2023-12-24 13:41:05,167 INFO L226 Difference]: Without dead ends: 3659 [2023-12-24 13:41:05,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 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 13:41:05,169 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 162 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:05,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 820 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:41:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2023-12-24 13:41:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 2828. [2023-12-24 13:41:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2760 states have (on average 1.1608695652173913) internal successors, (3204), 2762 states have internal predecessors, (3204), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3288 transitions. [2023-12-24 13:41:05,307 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3288 transitions. Word has length 165 [2023-12-24 13:41:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:05,308 INFO L495 AbstractCegarLoop]: Abstraction has 2828 states and 3288 transitions. [2023-12-24 13:41:05,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3288 transitions. [2023-12-24 13:41:05,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 13:41:05,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:05,309 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:05,318 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 (74)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:05,512 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:05,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1981112663, now seen corresponding path program 1 times [2023-12-24 13:41:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:05,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147433149] [2023-12-24 13:41:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:05,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:05,514 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:05,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2023-12-24 13:41:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:05,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 13:41:05,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:05,915 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:05,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2023-12-24 13:41:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:05,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:41:05,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:05,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147433149] [2023-12-24 13:41:05,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147433149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:41:05,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:41:05,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 13:41:05,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848865768] [2023-12-24 13:41:05,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:05,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:41:05,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:41:05,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 13:41:05,936 INFO L87 Difference]: Start difference. First operand 2828 states and 3288 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:06,595 INFO L93 Difference]: Finished difference Result 5851 states and 6794 transitions. [2023-12-24 13:41:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 13:41:06,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 165 [2023-12-24 13:41:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:06,598 INFO L225 Difference]: With dead ends: 5851 [2023-12-24 13:41:06,599 INFO L226 Difference]: Without dead ends: 3024 [2023-12-24 13:41:06,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 13:41:06,601 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 83 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:06,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 727 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 13:41:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2023-12-24 13:41:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 2832. [2023-12-24 13:41:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2764 states have (on average 1.1606367583212736) internal successors, (3208), 2766 states have internal predecessors, (3208), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3292 transitions. [2023-12-24 13:41:06,751 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3292 transitions. Word has length 165 [2023-12-24 13:41:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:06,751 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 3292 transitions. [2023-12-24 13:41:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3292 transitions. [2023-12-24 13:41:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 13:41:06,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:06,753 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:06,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:06,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:06,953 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:06,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:06,954 INFO L85 PathProgramCache]: Analyzing trace with hash -538847271, now seen corresponding path program 1 times [2023-12-24 13:41:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:06,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444598562] [2023-12-24 13:41:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:06,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:06,955 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:06,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2023-12-24 13:41:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:07,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:41:07,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:07,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 13:41:07,334 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 43 treesize of output 25 [2023-12-24 13:41:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:07,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 13:41:07,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444598562] [2023-12-24 13:41:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444598562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 13:41:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 13:41:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 13:41:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350426306] [2023-12-24 13:41:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 13:41:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 13:41:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-24 13:41:07,365 INFO L87 Difference]: Start difference. First operand 2832 states and 3292 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:07,876 INFO L93 Difference]: Finished difference Result 3356 states and 4018 transitions. [2023-12-24 13:41:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 13:41:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 165 [2023-12-24 13:41:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:07,879 INFO L225 Difference]: With dead ends: 3356 [2023-12-24 13:41:07,879 INFO L226 Difference]: Without dead ends: 3354 [2023-12-24 13:41:07,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-12-24 13:41:07,880 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 135 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:07,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1755 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 13:41:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2023-12-24 13:41:08,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 2832. [2023-12-24 13:41:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2764 states have (on average 1.1606367583212736) internal successors, (3208), 2766 states have internal predecessors, (3208), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3292 transitions. [2023-12-24 13:41:08,022 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3292 transitions. Word has length 165 [2023-12-24 13:41:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:08,022 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 3292 transitions. [2023-12-24 13:41:08,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3292 transitions. [2023-12-24 13:41:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 13:41:08,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:08,024 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:08,030 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 (76)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:08,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:08,226 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:08,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 391855393, now seen corresponding path program 1 times [2023-12-24 13:41:08,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:08,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693986092] [2023-12-24 13:41:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:08,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:08,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:08,228 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:08,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2023-12-24 13:41:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:08,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 13:41:08,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:08,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 13:41:09,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:09,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 37 [2023-12-24 13:41:09,475 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 54 treesize of output 38 [2023-12-24 13:41:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:41:09,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:10,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:10,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 1 [2023-12-24 13:41:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:10,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:10,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693986092] [2023-12-24 13:41:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693986092] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:10,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:10,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-12-24 13:41:10,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323444696] [2023-12-24 13:41:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:10,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 13:41:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 13:41:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2023-12-24 13:41:10,088 INFO L87 Difference]: Start difference. First operand 2832 states and 3292 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:11,754 INFO L93 Difference]: Finished difference Result 6386 states and 7392 transitions. [2023-12-24 13:41:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 13:41:11,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2023-12-24 13:41:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:11,758 INFO L225 Difference]: With dead ends: 6386 [2023-12-24 13:41:11,758 INFO L226 Difference]: Without dead ends: 3555 [2023-12-24 13:41:11,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=231, Invalid=1329, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 13:41:11,760 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 484 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:11,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1173 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 13:41:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2023-12-24 13:41:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 2850. [2023-12-24 13:41:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2782 states have (on average 1.1617541337167505) internal successors, (3232), 2784 states have internal predecessors, (3232), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3316 transitions. [2023-12-24 13:41:11,913 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3316 transitions. Word has length 166 [2023-12-24 13:41:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:11,913 INFO L495 AbstractCegarLoop]: Abstraction has 2850 states and 3316 transitions. [2023-12-24 13:41:11,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3316 transitions. [2023-12-24 13:41:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 13:41:11,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:11,915 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:11,923 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 (77)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:12,121 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:12,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash -547688355, now seen corresponding path program 1 times [2023-12-24 13:41:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935801272] [2023-12-24 13:41:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:12,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:12,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:12,122 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:12,123 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 (78)] Waiting until timeout for monitored process [2023-12-24 13:41:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:12,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 13:41:12,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:12,433 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 13:41:13,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:13,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 54 [2023-12-24 13:41:13,981 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 52 treesize of output 36 [2023-12-24 13:41:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:41:14,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:14,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:14,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935801272] [2023-12-24 13:41:14,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935801272] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:14,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:14,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [24] total 34 [2023-12-24 13:41:14,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268894035] [2023-12-24 13:41:14,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:14,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 13:41:14,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 13:41:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 13:41:14,760 INFO L87 Difference]: Start difference. First operand 2850 states and 3316 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:16,681 INFO L93 Difference]: Finished difference Result 6526 states and 7538 transitions. [2023-12-24 13:41:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 13:41:16,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2023-12-24 13:41:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:16,684 INFO L225 Difference]: With dead ends: 6526 [2023-12-24 13:41:16,684 INFO L226 Difference]: Without dead ends: 3677 [2023-12-24 13:41:16,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 13:41:16,686 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 382 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:16,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1537 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 13:41:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2023-12-24 13:41:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 2880. [2023-12-24 13:41:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2812 states have (on average 1.1600284495021338) internal successors, (3262), 2814 states have internal predecessors, (3262), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3346 transitions. [2023-12-24 13:41:16,829 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3346 transitions. Word has length 166 [2023-12-24 13:41:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:16,830 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 3346 transitions. [2023-12-24 13:41:16,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:16,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3346 transitions. [2023-12-24 13:41:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 13:41:16,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:16,831 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:16,837 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 (78)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:17,032 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:17,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash -673848163, now seen corresponding path program 1 times [2023-12-24 13:41:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000900708] [2023-12-24 13:41:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:17,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:17,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:17,034 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:17,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2023-12-24 13:41:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:17,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 13:41:17,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:17,337 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 13:41:19,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:19,290 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 122 treesize of output 64 [2023-12-24 13:41:19,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-12-24 13:41:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:41:19,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:20,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:20,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000900708] [2023-12-24 13:41:20,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000900708] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:20,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:20,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 36 [2023-12-24 13:41:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021245980] [2023-12-24 13:41:20,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:41:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:41:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 13:41:20,312 INFO L87 Difference]: Start difference. First operand 2880 states and 3346 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:23,031 INFO L93 Difference]: Finished difference Result 6850 states and 7869 transitions. [2023-12-24 13:41:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 13:41:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2023-12-24 13:41:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:23,036 INFO L225 Difference]: With dead ends: 6850 [2023-12-24 13:41:23,036 INFO L226 Difference]: Without dead ends: 3971 [2023-12-24 13:41:23,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=425, Invalid=2025, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 13:41:23,045 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 369 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:23,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1924 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 13:41:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2023-12-24 13:41:23,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 2884. [2023-12-24 13:41:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2816 states have (on average 1.1598011363636365) internal successors, (3266), 2818 states have internal predecessors, (3266), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 3350 transitions. [2023-12-24 13:41:23,193 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 3350 transitions. Word has length 166 [2023-12-24 13:41:23,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:23,193 INFO L495 AbstractCegarLoop]: Abstraction has 2884 states and 3350 transitions. [2023-12-24 13:41:23,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 3350 transitions. [2023-12-24 13:41:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 13:41:23,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:23,195 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:23,201 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 (79)] Ended with exit code 0 [2023-12-24 13:41:23,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:23,396 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:23,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash 432802845, now seen corresponding path program 1 times [2023-12-24 13:41:23,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:23,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188717342] [2023-12-24 13:41:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:23,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:23,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:23,398 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:23,398 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 (80)] Waiting until timeout for monitored process [2023-12-24 13:41:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:23,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 13:41:23,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:25,513 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 61 treesize of output 45 [2023-12-24 13:41:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:41:25,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:26,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:26,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188717342] [2023-12-24 13:41:26,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188717342] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:26,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:26,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22] total 33 [2023-12-24 13:41:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918242029] [2023-12-24 13:41:26,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:26,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 13:41:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 13:41:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 13:41:26,926 INFO L87 Difference]: Start difference. First operand 2884 states and 3350 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:31,507 INFO L93 Difference]: Finished difference Result 7355 states and 8387 transitions. [2023-12-24 13:41:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 13:41:31,508 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2023-12-24 13:41:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:31,511 INFO L225 Difference]: With dead ends: 7355 [2023-12-24 13:41:31,511 INFO L226 Difference]: Without dead ends: 4472 [2023-12-24 13:41:31,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=554, Invalid=2526, Unknown=0, NotChecked=0, Total=3080 [2023-12-24 13:41:31,514 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 483 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:31,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 2439 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 13:41:31,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2023-12-24 13:41:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3010. [2023-12-24 13:41:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2942 states have (on average 1.1563562202583277) internal successors, (3402), 2944 states have internal predecessors, (3402), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 3486 transitions. [2023-12-24 13:41:31,680 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 3486 transitions. Word has length 166 [2023-12-24 13:41:31,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:31,680 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 3486 transitions. [2023-12-24 13:41:31,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 3486 transitions. [2023-12-24 13:41:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 13:41:31,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:31,682 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:31,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Ended with exit code 0 [2023-12-24 13:41:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:31,883 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:31,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:31,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2087157089, now seen corresponding path program 1 times [2023-12-24 13:41:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:31,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101241709] [2023-12-24 13:41:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:31,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:31,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:31,885 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:31,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2023-12-24 13:41:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:32,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 13:41:32,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:32,537 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 44 treesize of output 31 [2023-12-24 13:41:32,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:32,747 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 72 treesize of output 36 [2023-12-24 13:41:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 332 proven. 66 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-24 13:41:32,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-12-24 13:41:33,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:33,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101241709] [2023-12-24 13:41:33,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101241709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 13:41:33,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 13:41:33,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2023-12-24 13:41:33,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140126684] [2023-12-24 13:41:33,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 13:41:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-24 13:41:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-24 13:41:33,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-12-24 13:41:33,341 INFO L87 Difference]: Start difference. First operand 3010 states and 3486 transitions. Second operand has 27 states, 23 states have (on average 5.521739130434782) internal successors, (127), 26 states have internal predecessors, (127), 6 states have call successors, (32), 3 states have call predecessors, (32), 6 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-24 13:41:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:35,536 INFO L93 Difference]: Finished difference Result 3616 states and 4294 transitions. [2023-12-24 13:41:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 13:41:35,537 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.521739130434782) internal successors, (127), 26 states have internal predecessors, (127), 6 states have call successors, (32), 3 states have call predecessors, (32), 6 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) Word has length 166 [2023-12-24 13:41:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:35,539 INFO L225 Difference]: With dead ends: 3616 [2023-12-24 13:41:35,539 INFO L226 Difference]: Without dead ends: 3614 [2023-12-24 13:41:35,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=610, Invalid=2930, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 13:41:35,540 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 464 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:35,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 2348 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 13:41:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2023-12-24 13:41:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3006. [2023-12-24 13:41:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2938 states have (on average 1.156569094622192) internal successors, (3398), 2940 states have internal predecessors, (3398), 42 states have call successors, (42), 25 states have call predecessors, (42), 25 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 13:41:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 3482 transitions. [2023-12-24 13:41:35,690 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 3482 transitions. Word has length 166 [2023-12-24 13:41:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:35,690 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 3482 transitions. [2023-12-24 13:41:35,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.521739130434782) internal successors, (127), 26 states have internal predecessors, (127), 6 states have call successors, (32), 3 states have call predecessors, (32), 6 states have return successors, (32), 3 states have call predecessors, (32), 6 states have call successors, (32) [2023-12-24 13:41:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 3482 transitions. [2023-12-24 13:41:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-24 13:41:35,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:35,692 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:35,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:35,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:35,892 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:35,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash 351224729, now seen corresponding path program 1 times [2023-12-24 13:41:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448645764] [2023-12-24 13:41:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:35,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:35,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:35,894 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:35,895 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 (82)] Waiting until timeout for monitored process [2023-12-24 13:41:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:36,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 13:41:36,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:36,213 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 13:41:37,615 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 61 treesize of output 45 [2023-12-24 13:41:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:41:37,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:38,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:38,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448645764] [2023-12-24 13:41:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448645764] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:38,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:38,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22] total 33 [2023-12-24 13:41:38,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165476400] [2023-12-24 13:41:38,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:38,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 13:41:38,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:38,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 13:41:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 13:41:38,732 INFO L87 Difference]: Start difference. First operand 3006 states and 3482 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:41,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:41,734 INFO L93 Difference]: Finished difference Result 5727 states and 6598 transitions. [2023-12-24 13:41:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 13:41:41,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2023-12-24 13:41:41,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:41,738 INFO L225 Difference]: With dead ends: 5727 [2023-12-24 13:41:41,738 INFO L226 Difference]: Without dead ends: 3933 [2023-12-24 13:41:41,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=374, Invalid=2076, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 13:41:41,740 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 363 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:41,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1853 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 13:41:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2023-12-24 13:41:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 3020. [2023-12-24 13:41:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 2946 states have (on average 1.156143923964698) internal successors, (3406), 2949 states have internal predecessors, (3406), 46 states have call successors, (46), 27 states have call predecessors, (46), 27 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:41:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 3498 transitions. [2023-12-24 13:41:41,913 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 3498 transitions. Word has length 166 [2023-12-24 13:41:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:41,913 INFO L495 AbstractCegarLoop]: Abstraction has 3020 states and 3498 transitions. [2023-12-24 13:41:41,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 3498 transitions. [2023-12-24 13:41:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 13:41:41,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:41,915 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:41,924 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 (82)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:42,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:42,115 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:42,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1936047331, now seen corresponding path program 1 times [2023-12-24 13:41:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:42,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537260612] [2023-12-24 13:41:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:42,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:42,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:42,117 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:42,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2023-12-24 13:41:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:42,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 13:41:42,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:42,441 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 13:41:43,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:43,297 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 66 treesize of output 36 [2023-12-24 13:41:43,299 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 42 treesize of output 30 [2023-12-24 13:41:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-24 13:41:43,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 13:41:43,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537260612] [2023-12-24 13:41:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537260612] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:43,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:43,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 22 [2023-12-24 13:41:43,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153029052] [2023-12-24 13:41:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:41:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:41:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-12-24 13:41:43,637 INFO L87 Difference]: Start difference. First operand 3020 states and 3498 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:44,210 INFO L93 Difference]: Finished difference Result 6137 states and 7100 transitions. [2023-12-24 13:41:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:41:44,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 168 [2023-12-24 13:41:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:44,213 INFO L225 Difference]: With dead ends: 6137 [2023-12-24 13:41:44,213 INFO L226 Difference]: Without dead ends: 3134 [2023-12-24 13:41:44,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-12-24 13:41:44,215 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 67 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:44,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 539 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 13:41:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2023-12-24 13:41:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2680. [2023-12-24 13:41:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2606 states have (on average 1.1619339984650805) internal successors, (3028), 2609 states have internal predecessors, (3028), 46 states have call successors, (46), 27 states have call predecessors, (46), 27 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:41:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3120 transitions. [2023-12-24 13:41:44,384 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3120 transitions. Word has length 168 [2023-12-24 13:41:44,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:44,384 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 3120 transitions. [2023-12-24 13:41:44,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3120 transitions. [2023-12-24 13:41:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-24 13:41:44,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:44,387 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:44,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Ended with exit code 0 [2023-12-24 13:41:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:44,588 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:44,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1530850700, now seen corresponding path program 1 times [2023-12-24 13:41:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000562299] [2023-12-24 13:41:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:44,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:44,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:44,590 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:44,591 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 (84)] Waiting until timeout for monitored process [2023-12-24 13:41:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:44,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 13:41:44,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:45,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-12-24 13:41:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2875 backedges. 1153 proven. 48 refuted. 0 times theorem prover too weak. 1674 trivial. 0 not checked. [2023-12-24 13:41:45,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2875 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2854 trivial. 0 not checked. [2023-12-24 13:41:45,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000562299] [2023-12-24 13:41:45,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000562299] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:45,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:45,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2023-12-24 13:41:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901430970] [2023-12-24 13:41:45,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:45,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 13:41:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 13:41:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-24 13:41:45,491 INFO L87 Difference]: Start difference. First operand 2680 states and 3120 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:45,867 INFO L93 Difference]: Finished difference Result 4612 states and 5366 transitions. [2023-12-24 13:41:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 13:41:45,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 295 [2023-12-24 13:41:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:45,870 INFO L225 Difference]: With dead ends: 4612 [2023-12-24 13:41:45,870 INFO L226 Difference]: Without dead ends: 3036 [2023-12-24 13:41:45,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-24 13:41:45,871 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 160 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:45,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 571 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 13:41:45,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2023-12-24 13:41:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2412. [2023-12-24 13:41:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2338 states have (on average 1.129170230966638) internal successors, (2640), 2341 states have internal predecessors, (2640), 46 states have call successors, (46), 27 states have call predecessors, (46), 27 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:41:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 2732 transitions. [2023-12-24 13:41:46,057 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 2732 transitions. Word has length 295 [2023-12-24 13:41:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:46,057 INFO L495 AbstractCegarLoop]: Abstraction has 2412 states and 2732 transitions. [2023-12-24 13:41:46,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 2732 transitions. [2023-12-24 13:41:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-24 13:41:46,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:46,060 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:46,069 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 (84)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:46,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:46,261 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:46,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash -984449024, now seen corresponding path program 1 times [2023-12-24 13:41:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864982814] [2023-12-24 13:41:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:46,263 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:46,263 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 (85)] Waiting until timeout for monitored process [2023-12-24 13:41:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:47,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 13:41:47,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:47,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:41:47,299 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 13:41:47,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 13:41:48,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:48,049 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 81 treesize of output 50 [2023-12-24 13:41:48,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2023-12-24 13:41:48,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:48,445 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 79 treesize of output 37 [2023-12-24 13:41:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 1249 proven. 48 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked. [2023-12-24 13:41:48,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2855 trivial. 0 not checked. [2023-12-24 13:41:49,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864982814] [2023-12-24 13:41:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864982814] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [25] total 32 [2023-12-24 13:41:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809325682] [2023-12-24 13:41:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:49,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 13:41:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 13:41:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2023-12-24 13:41:49,285 INFO L87 Difference]: Start difference. First operand 2412 states and 2732 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:51,222 INFO L93 Difference]: Finished difference Result 5888 states and 6605 transitions. [2023-12-24 13:41:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 13:41:51,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 296 [2023-12-24 13:41:51,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:51,227 INFO L225 Difference]: With dead ends: 5888 [2023-12-24 13:41:51,227 INFO L226 Difference]: Without dead ends: 3493 [2023-12-24 13:41:51,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 562 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 13:41:51,228 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 417 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:51,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1380 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 13:41:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2023-12-24 13:41:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 2365. [2023-12-24 13:41:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2291 states have (on average 1.1143605412483633) internal successors, (2553), 2294 states have internal predecessors, (2553), 46 states have call successors, (46), 27 states have call predecessors, (46), 27 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:41:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 2645 transitions. [2023-12-24 13:41:51,398 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 2645 transitions. Word has length 296 [2023-12-24 13:41:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:51,398 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 2645 transitions. [2023-12-24 13:41:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 2645 transitions. [2023-12-24 13:41:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-24 13:41:51,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:51,400 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:51,411 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 (85)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:51,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:51,601 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:51,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:51,601 INFO L85 PathProgramCache]: Analyzing trace with hash -166800574, now seen corresponding path program 1 times [2023-12-24 13:41:51,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:51,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373569604] [2023-12-24 13:41:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:51,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:51,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:51,604 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:51,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2023-12-24 13:41:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:52,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 13:41:52,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:52,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:41:52,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 13:41:52,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 13:41:53,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:53,364 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 81 treesize of output 50 [2023-12-24 13:41:53,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:53,490 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 81 treesize of output 50 [2023-12-24 13:41:53,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2023-12-24 13:41:53,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:53,776 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 79 treesize of output 37 [2023-12-24 13:41:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 1249 proven. 48 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked. [2023-12-24 13:41:53,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2855 trivial. 0 not checked. [2023-12-24 13:41:54,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:54,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373569604] [2023-12-24 13:41:54,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373569604] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:54,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:54,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [24] total 29 [2023-12-24 13:41:54,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774791132] [2023-12-24 13:41:54,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:54,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:41:54,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:41:54,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2023-12-24 13:41:54,333 INFO L87 Difference]: Start difference. First operand 2365 states and 2645 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:55,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:55,286 INFO L93 Difference]: Finished difference Result 4679 states and 5204 transitions. [2023-12-24 13:41:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:41:55,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 296 [2023-12-24 13:41:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:55,291 INFO L225 Difference]: With dead ends: 4679 [2023-12-24 13:41:55,291 INFO L226 Difference]: Without dead ends: 3223 [2023-12-24 13:41:55,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 563 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2023-12-24 13:41:55,292 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 247 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:55,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 874 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:41:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2023-12-24 13:41:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 2365. [2023-12-24 13:41:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2291 states have (on average 1.1113051069402007) internal successors, (2546), 2294 states have internal predecessors, (2546), 46 states have call successors, (46), 27 states have call predecessors, (46), 27 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:41:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 2638 transitions. [2023-12-24 13:41:55,463 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 2638 transitions. Word has length 296 [2023-12-24 13:41:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:55,463 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 2638 transitions. [2023-12-24 13:41:55,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 2638 transitions. [2023-12-24 13:41:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-24 13:41:55,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:55,466 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:55,474 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 (86)] Forceful destruction successful, exit code 0 [2023-12-24 13:41:55,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:55,666 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:55,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1921330174, now seen corresponding path program 1 times [2023-12-24 13:41:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465096696] [2023-12-24 13:41:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:55,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:55,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:55,668 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:55,669 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 (87)] Waiting until timeout for monitored process [2023-12-24 13:41:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:41:56,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 13:41:56,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:41:56,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:41:56,798 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 13:41:56,940 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 36 treesize of output 38 [2023-12-24 13:41:57,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:57,694 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 90 treesize of output 62 [2023-12-24 13:41:57,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:57,813 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 90 treesize of output 62 [2023-12-24 13:41:58,046 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 55 treesize of output 39 [2023-12-24 13:41:58,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:41:58,146 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 88 treesize of output 40 [2023-12-24 13:41:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 1249 proven. 48 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked. [2023-12-24 13:41:58,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:41:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2855 trivial. 0 not checked. [2023-12-24 13:41:58,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:41:58,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465096696] [2023-12-24 13:41:58,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465096696] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:41:58,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:41:58,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [25] total 30 [2023-12-24 13:41:58,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424791460] [2023-12-24 13:41:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:41:58,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 13:41:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:41:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 13:41:58,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2023-12-24 13:41:58,727 INFO L87 Difference]: Start difference. First operand 2365 states and 2638 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:59,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:41:59,572 INFO L93 Difference]: Finished difference Result 4600 states and 5087 transitions. [2023-12-24 13:41:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 13:41:59,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 296 [2023-12-24 13:41:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:41:59,575 INFO L225 Difference]: With dead ends: 4600 [2023-12-24 13:41:59,575 INFO L226 Difference]: Without dead ends: 3144 [2023-12-24 13:41:59,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 561 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 13:41:59,576 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 224 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 13:41:59,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 647 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 13:41:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2023-12-24 13:41:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2303. [2023-12-24 13:41:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2229 states have (on average 1.1085688649618664) internal successors, (2471), 2232 states have internal predecessors, (2471), 46 states have call successors, (46), 27 states have call predecessors, (46), 27 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-24 13:41:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2563 transitions. [2023-12-24 13:41:59,757 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2563 transitions. Word has length 296 [2023-12-24 13:41:59,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:41:59,758 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 2563 transitions. [2023-12-24 13:41:59,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:41:59,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2563 transitions. [2023-12-24 13:41:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-24 13:41:59,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 13:41:59,760 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 13:41:59,769 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 (87)] Ended with exit code 0 [2023-12-24 13:41:59,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:59,961 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 13:41:59,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 13:41:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1870767162, now seen corresponding path program 1 times [2023-12-24 13:41:59,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 13:41:59,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990885494] [2023-12-24 13:41:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 13:41:59,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:41:59,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 13:41:59,963 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 13:41:59,963 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 (88)] Waiting until timeout for monitored process [2023-12-24 13:42:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 13:42:00,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 13:42:00,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 13:42:00,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 13:42:01,026 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 13:42:01,182 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 36 treesize of output 38 [2023-12-24 13:42:02,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:42:02,236 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 106 treesize of output 81 [2023-12-24 13:42:02,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:42:02,430 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 121 treesize of output 84 [2023-12-24 13:42:02,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2023-12-24 13:42:03,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 13:42:03,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 57 [2023-12-24 13:42:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 1249 proven. 48 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked. [2023-12-24 13:42:03,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 13:42:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2023-12-24 13:42:04,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 13:42:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990885494] [2023-12-24 13:42:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990885494] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 13:42:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 13:42:04,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [33] total 43 [2023-12-24 13:42:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894989492] [2023-12-24 13:42:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 13:42:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 13:42:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 13:42:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 13:42:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 13:42:04,681 INFO L87 Difference]: Start difference. First operand 2303 states and 2563 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:42:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 13:42:07,144 INFO L93 Difference]: Finished difference Result 4617 states and 5082 transitions. [2023-12-24 13:42:07,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 13:42:07,145 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 298 [2023-12-24 13:42:07,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 13:42:07,145 INFO L225 Difference]: With dead ends: 4617 [2023-12-24 13:42:07,145 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 13:42:07,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 556 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=292, Invalid=2570, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 13:42:07,147 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 369 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 13:42:07,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1542 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 13:42:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 13:42:07,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 13:42:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 13:42:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 13:42:07,148 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 298 [2023-12-24 13:42:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 13:42:07,148 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 13:42:07,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 13:42:07,148 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 13:42:07,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 13:42:07,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 13:42:07,158 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 (88)] Forceful destruction successful, exit code 0 [2023-12-24 13:42:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 13:42:07,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 13:50:56,508 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-4-4-5-6-4-9-4-9-4-9-8-9-8-12-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-6-14-6-14-6-14-5-14-5-12-4-12-3-12-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-63-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-8-14-6-14-6-14-6-14-5-14-5-12-4-12-3-12-1 context. [2023-12-24 13:50:56,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 13:50:56,515 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 13:50:56,516 INFO L158 Benchmark]: Toolchain (without parser) took 864090.44ms. Allocated memory was 190.8MB in the beginning and 843.1MB in the end (delta: 652.2MB). Free memory was 150.8MB in the beginning and 352.8MB in the end (delta: -201.9MB). Peak memory consumption was 451.5MB. Max. memory is 8.0GB. [2023-12-24 13:50:56,517 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 190.8MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 13:50:56,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.31ms. Allocated memory is still 190.8MB. Free memory was 150.5MB in the beginning and 133.0MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-24 13:50:56,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.53ms. Allocated memory is still 190.8MB. Free memory was 133.0MB in the beginning and 128.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 13:50:56,517 INFO L158 Benchmark]: Boogie Preprocessor took 75.23ms. Allocated memory is still 190.8MB. Free memory was 128.8MB in the beginning and 123.2MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 13:50:56,517 INFO L158 Benchmark]: RCFGBuilder took 699.89ms. Allocated memory is still 190.8MB. Free memory was 123.2MB in the beginning and 143.6MB in the end (delta: -20.4MB). Peak memory consumption was 34.7MB. Max. memory is 8.0GB. [2023-12-24 13:50:56,517 INFO L158 Benchmark]: TraceAbstraction took 863009.91ms. Allocated memory was 190.8MB in the beginning and 843.1MB in the end (delta: 652.2MB). Free memory was 142.5MB in the beginning and 352.8MB in the end (delta: -210.2MB). Peak memory consumption was 442.0MB. Max. memory is 8.0GB. [2023-12-24 13:50:56,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 190.8MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.31ms. Allocated memory is still 190.8MB. Free memory was 150.5MB in the beginning and 133.0MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.53ms. Allocated memory is still 190.8MB. Free memory was 133.0MB in the beginning and 128.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.23ms. Allocated memory is still 190.8MB. Free memory was 128.8MB in the beginning and 123.2MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 699.89ms. Allocated memory is still 190.8MB. Free memory was 123.2MB in the beginning and 143.6MB in the end (delta: -20.4MB). Peak memory consumption was 34.7MB. Max. memory is 8.0GB. * TraceAbstraction took 863009.91ms. Allocated memory was 190.8MB in the beginning and 843.1MB in the end (delta: 652.2MB). Free memory was 142.5MB in the beginning and 352.8MB in the end (delta: -210.2MB). Peak memory consumption was 442.0MB. 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 ∨-4-4-3-6-2-9-2-9-3-4-3-21-2-21-2-21-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-6-6-9-4-9-4-9-21-21-21-21-2-21-2-21-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown