/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/recursified_loop-simple/recursified_nested_6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:48:53,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:48:53,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:48:54,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:48:54,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:48:54,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:48:54,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:48:54,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:48:54,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:48:54,027 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:48:54,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:48:54,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:48:54,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:48:54,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:48:54,029 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:48:54,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:48:54,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:48:54,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:48:54,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:48:54,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:48:54,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:48:54,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:48:54,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:48:54,032 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:48:54,032 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:48:54,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:48:54,032 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:48:54,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:48:54,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:48:54,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:48:54,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:48:54,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:48:54,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:48:54,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:48:54,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:48:54,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:48:54,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:48:54,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:48:54,034 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:48:54,035 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:48:54,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:48:54,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:48:54,035 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:48:54,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:48:54,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:48:54,036 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:48:54,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:48:54,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:48:54,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:48:54,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:48:54,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:48:54,200 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:48:54,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-simple/recursified_nested_6.c [2023-12-16 17:48:55,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:48:55,368 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:48:55,368 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_6.c [2023-12-16 17:48:55,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ce5a15d/9e1c71c787c247809af2855b2d12f9e2/FLAGcf0537668 [2023-12-16 17:48:55,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ce5a15d/9e1c71c787c247809af2855b2d12f9e2 [2023-12-16 17:48:55,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:48:55,384 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:48:55,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:48:55,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:48:55,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:48:55,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9589d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55, skipping insertion in model container [2023-12-16 17:48:55,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:48:55,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2023-12-16 17:48:55,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:48:55,535 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:48:55,558 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2023-12-16 17:48:55,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:48:55,571 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:48:55,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55 WrapperNode [2023-12-16 17:48:55,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:48:55,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:48:55,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:48:55,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:48:55,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,598 INFO L138 Inliner]: procedures = 18, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 89 [2023-12-16 17:48:55,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:48:55,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:48:55,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:48:55,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:48:55,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,626 INFO L175 MemorySlicer]: Split 26 memory accesses to 5 slices as follows [2, 6, 6, 6, 6]. 23 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 1, 1, 1]. The 8 writes are split as follows [0, 2, 2, 2, 2]. [2023-12-16 17:48:55,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,632 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:48:55,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:48:55,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:48:55,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:48:55,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (1/1) ... [2023-12-16 17:48:55,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:48:55,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:48:55,693 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) [2023-12-16 17:48:55,699 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 [2023-12-16 17:48:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:48:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_28_0 [2023-12-16 17:48:55,719 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_28_0 [2023-12-16 17:48:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:48:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 17:48:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 17:48:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2023-12-16 17:48:55,721 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2023-12-16 17:48:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 17:48:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 17:48:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 17:48:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 17:48:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-16 17:48:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_28_0 [2023-12-16 17:48:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_28_0 [2023-12-16 17:48:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:48:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:48:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2023-12-16 17:48:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2023-12-16 17:48:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 17:48:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 17:48:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 17:48:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 17:48:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 17:48:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-16 17:48:55,848 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:48:55,850 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:48:56,037 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:48:56,063 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:48:56,063 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 17:48:56,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:48:56 BoogieIcfgContainer [2023-12-16 17:48:56,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:48:56,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:48:56,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:48:56,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:48:56,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:48:55" (1/3) ... [2023-12-16 17:48:56,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27827c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:48:56, skipping insertion in model container [2023-12-16 17:48:56,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:48:55" (2/3) ... [2023-12-16 17:48:56,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27827c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:48:56, skipping insertion in model container [2023-12-16 17:48:56,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:48:56" (3/3) ... [2023-12-16 17:48:56,069 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_6.c [2023-12-16 17:48:56,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:48:56,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:48:56,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:48:56,113 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;@3b7f9e0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:48:56,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:48:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 36 states have internal predecessors, (45), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:48:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 17:48:56,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:56,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:56,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:56,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 895077984, now seen corresponding path program 1 times [2023-12-16 17:48:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:56,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352534197] [2023-12-16 17:48:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:56,131 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 [2023-12-16 17:48:56,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:56,133 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) [2023-12-16 17:48:56,146 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 [2023-12-16 17:48:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:56,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:48:56,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:56,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:56,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352534197] [2023-12-16 17:48:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352534197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:56,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 17:48:56,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477343270] [2023-12-16 17:48:56,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:56,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:48:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:56,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:48:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:48:56,250 INFO L87 Difference]: Start difference. First operand has 45 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 36 states have internal predecessors, (45), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-12-16 17:48:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:56,292 INFO L93 Difference]: Finished difference Result 94 states and 131 transitions. [2023-12-16 17:48:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:48:56,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) Word has length 12 [2023-12-16 17:48:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:56,299 INFO L225 Difference]: With dead ends: 94 [2023-12-16 17:48:56,299 INFO L226 Difference]: Without dead ends: 48 [2023-12-16 17:48:56,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:48:56,303 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:56,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 106 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:48:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-16 17:48:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-12-16 17:48:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 35 states have internal predecessors, (41), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:48:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2023-12-16 17:48:56,338 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 12 [2023-12-16 17:48:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2023-12-16 17:48:56,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-12-16 17:48:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2023-12-16 17:48:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 17:48:56,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:56,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:56,353 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 [2023-12-16 17:48:56,542 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 [2023-12-16 17:48:56,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:56,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1145376003, now seen corresponding path program 1 times [2023-12-16 17:48:56,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:56,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417785744] [2023-12-16 17:48:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:56,544 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 [2023-12-16 17:48:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:56,545 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) [2023-12-16 17:48:56,559 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 [2023-12-16 17:48:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:56,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:48:56,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:56,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:56,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417785744] [2023-12-16 17:48:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417785744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:56,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:48:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111043475] [2023-12-16 17:48:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:56,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:48:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:48:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:48:56,655 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-16 17:48:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:56,695 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2023-12-16 17:48:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:48:56,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) Word has length 15 [2023-12-16 17:48:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:56,696 INFO L225 Difference]: With dead ends: 89 [2023-12-16 17:48:56,696 INFO L226 Difference]: Without dead ends: 47 [2023-12-16 17:48:56,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:48:56,697 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:56,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:48:56,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-16 17:48:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-12-16 17:48:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 17:48:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2023-12-16 17:48:56,707 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 15 [2023-12-16 17:48:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:56,707 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2023-12-16 17:48:56,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-16 17:48:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2023-12-16 17:48:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 17:48:56,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:56,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:56,724 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 (3)] Ended with exit code 0 [2023-12-16 17:48:56,912 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 [2023-12-16 17:48:56,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:56,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1745726529, now seen corresponding path program 1 times [2023-12-16 17:48:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:56,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843385242] [2023-12-16 17:48:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:56,914 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 [2023-12-16 17:48:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:56,915 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) [2023-12-16 17:48:56,920 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 [2023-12-16 17:48:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:56,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:48:56,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:57,014 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 11 treesize of output 7 [2023-12-16 17:48:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:57,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:57,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843385242] [2023-12-16 17:48:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843385242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:57,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:57,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:48:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201263463] [2023-12-16 17:48:57,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:57,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:57,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:57,088 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:48:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:57,314 INFO L93 Difference]: Finished difference Result 90 states and 117 transitions. [2023-12-16 17:48:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:57,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-16 17:48:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:57,316 INFO L225 Difference]: With dead ends: 90 [2023-12-16 17:48:57,316 INFO L226 Difference]: Without dead ends: 47 [2023-12-16 17:48:57,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:57,317 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:57,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 85 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:48:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-16 17:48:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-16 17:48:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.303030303030303) internal successors, (43), 37 states have internal predecessors, (43), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-16 17:48:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2023-12-16 17:48:57,322 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 22 [2023-12-16 17:48:57,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:57,322 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2023-12-16 17:48:57,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:48:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2023-12-16 17:48:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 17:48:57,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:57,323 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:48:57,328 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 [2023-12-16 17:48:57,528 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 [2023-12-16 17:48:57,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:57,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:57,529 INFO L85 PathProgramCache]: Analyzing trace with hash 42419104, now seen corresponding path program 1 times [2023-12-16 17:48:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:57,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269762229] [2023-12-16 17:48:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:57,530 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 [2023-12-16 17:48:57,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:57,534 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) [2023-12-16 17:48:57,540 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 [2023-12-16 17:48:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:57,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:48:57,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:57,662 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 11 treesize of output 7 [2023-12-16 17:48:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 17:48:57,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:57,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269762229] [2023-12-16 17:48:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269762229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:57,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:57,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:48:57,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13388846] [2023-12-16 17:48:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:57,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:57,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:57,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:57,725 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:48:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:57,911 INFO L93 Difference]: Finished difference Result 94 states and 123 transitions. [2023-12-16 17:48:57,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:57,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2023-12-16 17:48:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:57,913 INFO L225 Difference]: With dead ends: 94 [2023-12-16 17:48:57,913 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 17:48:57,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:57,914 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:57,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 113 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:48:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 17:48:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-16 17:48:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 38 states have internal predecessors, (44), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-16 17:48:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2023-12-16 17:48:57,919 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 33 [2023-12-16 17:48:57,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:57,919 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2023-12-16 17:48:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:48:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2023-12-16 17:48:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 17:48:57,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:57,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:57,940 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 [2023-12-16 17:48:58,140 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 [2023-12-16 17:48:58,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:58,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:58,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2048772948, now seen corresponding path program 1 times [2023-12-16 17:48:58,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:58,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534678041] [2023-12-16 17:48:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:58,142 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 [2023-12-16 17:48:58,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:58,146 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) [2023-12-16 17:48:58,147 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 [2023-12-16 17:48:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:58,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:48:58,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:58,241 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 11 treesize of output 7 [2023-12-16 17:48:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:48:58,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:58,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:58,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534678041] [2023-12-16 17:48:58,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534678041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:58,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:58,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:48:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233035668] [2023-12-16 17:48:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:58,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:58,298 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:48:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:58,442 INFO L93 Difference]: Finished difference Result 98 states and 129 transitions. [2023-12-16 17:48:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:58,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 44 [2023-12-16 17:48:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:58,443 INFO L225 Difference]: With dead ends: 98 [2023-12-16 17:48:58,443 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 17:48:58,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:58,445 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:58,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 141 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:48:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 17:48:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-16 17:48:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 39 states have internal predecessors, (45), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2023-12-16 17:48:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-12-16 17:48:58,450 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 44 [2023-12-16 17:48:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:58,451 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-12-16 17:48:58,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:48:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-12-16 17:48:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 17:48:58,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:58,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:58,458 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 [2023-12-16 17:48:58,656 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 [2023-12-16 17:48:58,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:58,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash -490884196, now seen corresponding path program 1 times [2023-12-16 17:48:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:58,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734586851] [2023-12-16 17:48:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:58,657 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 [2023-12-16 17:48:58,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:58,658 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) [2023-12-16 17:48:58,668 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 [2023-12-16 17:48:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:58,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:48:58,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:58,787 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 11 treesize of output 7 [2023-12-16 17:48:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:48:58,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:48:58,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:58,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734586851] [2023-12-16 17:48:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734586851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:48:58,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:48:58,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:48:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407352884] [2023-12-16 17:48:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:48:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:48:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:48:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:58,847 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 17:48:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:58,957 INFO L93 Difference]: Finished difference Result 102 states and 135 transitions. [2023-12-16 17:48:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:48:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2023-12-16 17:48:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:58,958 INFO L225 Difference]: With dead ends: 102 [2023-12-16 17:48:58,958 INFO L226 Difference]: Without dead ends: 53 [2023-12-16 17:48:58,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:48:58,959 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:58,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 166 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:48:58,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-16 17:48:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-16 17:48:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 40 states have internal predecessors, (46), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-16 17:48:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2023-12-16 17:48:58,965 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 55 [2023-12-16 17:48:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:58,965 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2023-12-16 17:48:58,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 17:48:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2023-12-16 17:48:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 17:48:58,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:58,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:58,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:59,167 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 [2023-12-16 17:48:59,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:59,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1532339930, now seen corresponding path program 1 times [2023-12-16 17:48:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:59,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272158120] [2023-12-16 17:48:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:48:59,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:48:59,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:59,169 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) [2023-12-16 17:48:59,214 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 [2023-12-16 17:48:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:59,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:48:59,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:59,290 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 11 treesize of output 7 [2023-12-16 17:48:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 17:48:59,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:49:00,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272158120] [2023-12-16 17:49:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272158120] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:00,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-16 17:49:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746291096] [2023-12-16 17:49:00,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:49:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:49:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:49:00,208 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 17 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 3 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-16 17:49:00,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:00,773 INFO L93 Difference]: Finished difference Result 106 states and 139 transitions. [2023-12-16 17:49:00,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:49:00,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 3 states have call predecessors, (13), 6 states have call successors, (13) Word has length 60 [2023-12-16 17:49:00,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:00,775 INFO L225 Difference]: With dead ends: 106 [2023-12-16 17:49:00,775 INFO L226 Difference]: Without dead ends: 55 [2023-12-16 17:49:00,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:49:00,776 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 14 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:00,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 488 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:49:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-16 17:49:00,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-16 17:49:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 41 states have internal predecessors, (47), 8 states have call successors, (8), 4 states have call predecessors, (8), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-16 17:49:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2023-12-16 17:49:00,781 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 60 [2023-12-16 17:49:00,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:00,781 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2023-12-16 17:49:00,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 3 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-16 17:49:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2023-12-16 17:49:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-16 17:49:00,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:00,782 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:00,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:00,989 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 [2023-12-16 17:49:00,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:00,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:00,989 INFO L85 PathProgramCache]: Analyzing trace with hash -278499186, now seen corresponding path program 2 times [2023-12-16 17:49:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909133433] [2023-12-16 17:49:00,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:00,991 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 [2023-12-16 17:49:00,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:00,992 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) [2023-12-16 17:49:01,023 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 [2023-12-16 17:49:01,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:49:01,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:01,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-16 17:49:01,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:01,141 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 11 treesize of output 7 [2023-12-16 17:49:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 17:49:01,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:49:02,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:02,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909133433] [2023-12-16 17:49:02,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909133433] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:02,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:02,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2023-12-16 17:49:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154444857] [2023-12-16 17:49:02,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:02,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 17:49:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 17:49:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:49:02,750 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 22 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 7 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-16 17:49:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:03,353 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2023-12-16 17:49:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:49:03,353 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 7 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) Word has length 65 [2023-12-16 17:49:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:03,354 INFO L225 Difference]: With dead ends: 110 [2023-12-16 17:49:03,354 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 17:49:03,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:49:03,355 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 17 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:03,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 425 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:49:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 17:49:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-16 17:49:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 8 states have call successors, (8), 4 states have call predecessors, (8), 10 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-16 17:49:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2023-12-16 17:49:03,362 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 65 [2023-12-16 17:49:03,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:03,362 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2023-12-16 17:49:03,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 7 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-16 17:49:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2023-12-16 17:49:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 17:49:03,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:03,363 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:03,369 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 (9)] Ended with exit code 0 [2023-12-16 17:49:03,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:03,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:03,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash -649417640, now seen corresponding path program 3 times [2023-12-16 17:49:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:03,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332813603] [2023-12-16 17:49:03,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:49:03,565 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 [2023-12-16 17:49:03,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:03,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:49:03,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 17:49:03,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 17:49:03,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:03,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:49:03,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 17:49:03,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 17:49:03,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332813603] [2023-12-16 17:49:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332813603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:03,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:03,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 17:49:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517689248] [2023-12-16 17:49:03,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:49:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:49:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:49:03,752 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:49:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:03,855 INFO L93 Difference]: Finished difference Result 104 states and 135 transitions. [2023-12-16 17:49:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:49:03,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 70 [2023-12-16 17:49:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:03,857 INFO L225 Difference]: With dead ends: 104 [2023-12-16 17:49:03,857 INFO L226 Difference]: Without dead ends: 93 [2023-12-16 17:49:03,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:49:03,857 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 76 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:03,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 227 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:49:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-16 17:49:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2023-12-16 17:49:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 59 states have internal predecessors, (70), 11 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (17), 13 states have call predecessors, (17), 11 states have call successors, (17) [2023-12-16 17:49:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2023-12-16 17:49:03,864 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 70 [2023-12-16 17:49:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:03,865 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2023-12-16 17:49:03,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:49:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2023-12-16 17:49:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 17:49:03,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:03,866 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-16 17:49:03,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:04,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:04,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash -73104814, now seen corresponding path program 1 times [2023-12-16 17:49:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:04,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793347410] [2023-12-16 17:49:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:04,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:04,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:04,084 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) [2023-12-16 17:49:04,090 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 [2023-12-16 17:49:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:04,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 17:49:04,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:04,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-16 17:49:04,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-12-16 17:49:06,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793347410] [2023-12-16 17:49:06,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793347410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:06,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:06,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 27 [2023-12-16 17:49:06,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651547544] [2023-12-16 17:49:06,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:06,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 17:49:06,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:06,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 17:49:06,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-12-16 17:49:06,723 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 27 states, 21 states have (on average 3.761904761904762) internal successors, (79), 22 states have internal predecessors, (79), 8 states have call successors, (26), 7 states have call predecessors, (26), 10 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-12-16 17:49:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:07,551 INFO L93 Difference]: Finished difference Result 153 states and 205 transitions. [2023-12-16 17:49:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:49:07,551 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 3.761904761904762) internal successors, (79), 22 states have internal predecessors, (79), 8 states have call successors, (26), 7 states have call predecessors, (26), 10 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 128 [2023-12-16 17:49:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:07,552 INFO L225 Difference]: With dead ends: 153 [2023-12-16 17:49:07,552 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 17:49:07,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:49:07,553 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 53 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:07,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 571 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:49:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 17:49:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-16 17:49:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 60 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-16 17:49:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2023-12-16 17:49:07,560 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 128 [2023-12-16 17:49:07,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:07,560 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2023-12-16 17:49:07,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 3.761904761904762) internal successors, (79), 22 states have internal predecessors, (79), 8 states have call successors, (26), 7 states have call predecessors, (26), 10 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-12-16 17:49:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2023-12-16 17:49:07,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 17:49:07,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:07,562 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-16 17:49:07,584 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 [2023-12-16 17:49:07,767 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 [2023-12-16 17:49:07,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:07,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1658361758, now seen corresponding path program 2 times [2023-12-16 17:49:07,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:07,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581010118] [2023-12-16 17:49:07,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:07,768 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 [2023-12-16 17:49:07,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:07,769 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) [2023-12-16 17:49:07,771 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 [2023-12-16 17:49:07,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 17:49:07,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:07,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:49:07,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-16 17:49:07,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:49:07,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:07,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581010118] [2023-12-16 17:49:07,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581010118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:49:07,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:49:07,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:49:07,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679462809] [2023-12-16 17:49:07,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:49:07,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:49:07,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:07,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:49:07,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:49:07,922 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:07,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:07,968 INFO L93 Difference]: Finished difference Result 98 states and 125 transitions. [2023-12-16 17:49:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:49:07,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 138 [2023-12-16 17:49:07,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:07,969 INFO L225 Difference]: With dead ends: 98 [2023-12-16 17:49:07,969 INFO L226 Difference]: Without dead ends: 91 [2023-12-16 17:49:07,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:49:07,970 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 21 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 157 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 [2023-12-16 17:49:07,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 157 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:49:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-16 17:49:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2023-12-16 17:49:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 62 states have internal predecessors, (73), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-16 17:49:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2023-12-16 17:49:07,990 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 138 [2023-12-16 17:49:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:07,990 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2023-12-16 17:49:07,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2023-12-16 17:49:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 17:49:07,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:07,991 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-16 17:49:08,000 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 [2023-12-16 17:49:08,198 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 [2023-12-16 17:49:08,198 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:08,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 116645604, now seen corresponding path program 1 times [2023-12-16 17:49:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:08,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459982619] [2023-12-16 17:49:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:08,200 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 [2023-12-16 17:49:08,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:08,201 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) [2023-12-16 17:49:08,202 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 [2023-12-16 17:49:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:08,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 17:49:08,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:08,429 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 11 treesize of output 7 [2023-12-16 17:49:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 143 proven. 24 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-16 17:49:08,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 12 proven. 181 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-16 17:49:11,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:11,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459982619] [2023-12-16 17:49:11,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459982619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:11,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:11,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22] total 32 [2023-12-16 17:49:11,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573950471] [2023-12-16 17:49:11,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 17:49:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 17:49:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:49:11,615 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 32 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 9 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) [2023-12-16 17:49:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:12,804 INFO L93 Difference]: Finished difference Result 161 states and 213 transitions. [2023-12-16 17:49:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:49:12,805 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 9 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) Word has length 138 [2023-12-16 17:49:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:12,806 INFO L225 Difference]: With dead ends: 161 [2023-12-16 17:49:12,806 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 17:49:12,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 17:49:12,806 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 81 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:12,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 750 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:49:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 17:49:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-16 17:49:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 63 states have internal predecessors, (74), 11 states have call successors, (11), 4 states have call predecessors, (11), 12 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2023-12-16 17:49:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2023-12-16 17:49:12,812 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 138 [2023-12-16 17:49:12,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:12,812 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2023-12-16 17:49:12,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 9 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) [2023-12-16 17:49:12,812 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2023-12-16 17:49:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 17:49:12,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:12,813 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-16 17:49:12,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-16 17:49:13,013 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 [2023-12-16 17:49:13,014 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:13,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:13,014 INFO L85 PathProgramCache]: Analyzing trace with hash 987311672, now seen corresponding path program 2 times [2023-12-16 17:49:13,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:13,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912692590] [2023-12-16 17:49:13,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:13,015 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 [2023-12-16 17:49:13,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:13,016 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) [2023-12-16 17:49:13,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 17:49:13,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 17:49:13,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:13,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:49:13,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-16 17:49:13,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:49:13,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912692590] [2023-12-16 17:49:13,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912692590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:49:13,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:49:13,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:49:13,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453654700] [2023-12-16 17:49:13,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:49:13,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:49:13,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:13,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:49:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:49:13,155 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:13,236 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2023-12-16 17:49:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:49:13,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 148 [2023-12-16 17:49:13,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:13,237 INFO L225 Difference]: With dead ends: 101 [2023-12-16 17:49:13,237 INFO L226 Difference]: Without dead ends: 96 [2023-12-16 17:49:13,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:49:13,238 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 24 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:13,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 204 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:49:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-16 17:49:13,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2023-12-16 17:49:13,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 65 states have internal predecessors, (76), 11 states have call successors, (11), 4 states have call predecessors, (11), 12 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2023-12-16 17:49:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 106 transitions. [2023-12-16 17:49:13,244 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 106 transitions. Word has length 148 [2023-12-16 17:49:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:13,244 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 106 transitions. [2023-12-16 17:49:13,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2023-12-16 17:49:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 17:49:13,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:13,245 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-16 17:49:13,254 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 [2023-12-16 17:49:13,448 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 [2023-12-16 17:49:13,449 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:13,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 989158714, now seen corresponding path program 1 times [2023-12-16 17:49:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:13,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163994246] [2023-12-16 17:49:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:13,449 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 [2023-12-16 17:49:13,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:13,451 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) [2023-12-16 17:49:13,454 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 [2023-12-16 17:49:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:13,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 17:49:13,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:13,713 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 11 treesize of output 7 [2023-12-16 17:49:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 196 proven. 35 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-16 17:49:14,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 12 proven. 258 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-16 17:49:18,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:18,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163994246] [2023-12-16 17:49:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163994246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:18,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 26] total 37 [2023-12-16 17:49:18,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174741693] [2023-12-16 17:49:18,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 17:49:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 17:49:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:49:18,141 INFO L87 Difference]: Start difference. First operand 85 states and 106 transitions. Second operand has 37 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 10 states have call successors, (28), 9 states have call predecessors, (28), 14 states have return successors, (34), 12 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-16 17:49:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:19,681 INFO L93 Difference]: Finished difference Result 169 states and 221 transitions. [2023-12-16 17:49:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:49:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 10 states have call successors, (28), 9 states have call predecessors, (28), 14 states have return successors, (34), 12 states have call predecessors, (34), 10 states have call successors, (34) Word has length 148 [2023-12-16 17:49:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:19,682 INFO L225 Difference]: With dead ends: 169 [2023-12-16 17:49:19,682 INFO L226 Difference]: Without dead ends: 87 [2023-12-16 17:49:19,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=263, Invalid=1629, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 17:49:19,683 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 95 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:19,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 802 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 17:49:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-16 17:49:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-16 17:49:19,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 66 states have internal predecessors, (77), 11 states have call successors, (11), 4 states have call predecessors, (11), 13 states have return successors, (20), 16 states have call predecessors, (20), 11 states have call successors, (20) [2023-12-16 17:49:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2023-12-16 17:49:19,688 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 148 [2023-12-16 17:49:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:19,688 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2023-12-16 17:49:19,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 10 states have call successors, (28), 9 states have call predecessors, (28), 14 states have return successors, (34), 12 states have call predecessors, (34), 10 states have call successors, (34) [2023-12-16 17:49:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2023-12-16 17:49:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-16 17:49:19,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:19,689 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-16 17:49:19,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-16 17:49:19,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:19,894 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:19,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1042745818, now seen corresponding path program 2 times [2023-12-16 17:49:19,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:19,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84915559] [2023-12-16 17:49:19,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:19,895 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 [2023-12-16 17:49:19,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:19,896 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:49:19,896 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 (16)] Waiting until timeout for monitored process [2023-12-16 17:49:20,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 17:49:20,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:20,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:49:20,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-12-16 17:49:20,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:49:20,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:20,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84915559] [2023-12-16 17:49:20,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84915559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:49:20,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:49:20,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:49:20,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424238678] [2023-12-16 17:49:20,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:49:20,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:49:20,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:20,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:49:20,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:49:20,043 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:20,154 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2023-12-16 17:49:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:49:20,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 158 [2023-12-16 17:49:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:20,155 INFO L225 Difference]: With dead ends: 102 [2023-12-16 17:49:20,155 INFO L226 Difference]: Without dead ends: 99 [2023-12-16 17:49:20,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:49:20,156 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 19 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:20,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 243 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:49:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-16 17:49:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2023-12-16 17:49:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 64 states have (on average 1.234375) internal successors, (79), 68 states have internal predecessors, (79), 11 states have call successors, (11), 4 states have call predecessors, (11), 13 states have return successors, (20), 16 states have call predecessors, (20), 11 states have call successors, (20) [2023-12-16 17:49:20,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2023-12-16 17:49:20,160 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 158 [2023-12-16 17:49:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:20,161 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2023-12-16 17:49:20,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 17:49:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2023-12-16 17:49:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-16 17:49:20,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:20,162 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-16 17:49:20,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:20,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:20,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:20,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:20,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1042743896, now seen corresponding path program 1 times [2023-12-16 17:49:20,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:20,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769043851] [2023-12-16 17:49:20,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:49:20,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:20,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:20,364 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) [2023-12-16 17:49:20,366 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 [2023-12-16 17:49:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:20,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 17:49:20,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:20,585 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 11 treesize of output 7 [2023-12-16 17:49:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 271 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-16 17:49:20,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 10 proven. 36 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-12-16 17:49:21,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769043851] [2023-12-16 17:49:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769043851] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:21,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-16 17:49:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511668867] [2023-12-16 17:49:21,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:21,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:49:21,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:49:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:49:21,396 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand has 17 states, 13 states have (on average 5.615384615384615) internal successors, (73), 14 states have internal predecessors, (73), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-16 17:49:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:21,907 INFO L93 Difference]: Finished difference Result 177 states and 227 transitions. [2023-12-16 17:49:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:49:21,907 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 5.615384615384615) internal successors, (73), 14 states have internal predecessors, (73), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 158 [2023-12-16 17:49:21,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:21,908 INFO L225 Difference]: With dead ends: 177 [2023-12-16 17:49:21,908 INFO L226 Difference]: Without dead ends: 91 [2023-12-16 17:49:21,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:49:21,909 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 26 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:21,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 345 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-16 17:49:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-16 17:49:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 69 states have internal predecessors, (80), 11 states have call successors, (11), 4 states have call predecessors, (11), 14 states have return successors, (21), 17 states have call predecessors, (21), 11 states have call successors, (21) [2023-12-16 17:49:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2023-12-16 17:49:21,913 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 158 [2023-12-16 17:49:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:21,913 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2023-12-16 17:49:21,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 5.615384615384615) internal successors, (73), 14 states have internal predecessors, (73), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-16 17:49:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2023-12-16 17:49:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-16 17:49:21,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:21,915 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-16 17:49:21,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:22,115 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 [2023-12-16 17:49:22,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:22,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:22,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1674614788, now seen corresponding path program 2 times [2023-12-16 17:49:22,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:22,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112754611] [2023-12-16 17:49:22,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:49:22,116 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 [2023-12-16 17:49:22,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:22,128 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) [2023-12-16 17:49:22,161 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 [2023-12-16 17:49:22,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:49:22,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:22,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 17:49:22,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:22,462 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 11 treesize of output 7 [2023-12-16 17:49:22,539 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 11 treesize of output 7 [2023-12-16 17:49:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 996 proven. 46 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2023-12-16 17:49:22,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 10 proven. 76 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2023-12-16 17:49:24,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:24,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112754611] [2023-12-16 17:49:24,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112754611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:24,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:24,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-16 17:49:24,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239021260] [2023-12-16 17:49:24,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:24,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 17:49:24,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 17:49:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:49:24,876 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 26 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 21 states have internal predecessors, (81), 12 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) [2023-12-16 17:49:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:25,885 INFO L93 Difference]: Finished difference Result 181 states and 231 transitions. [2023-12-16 17:49:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:49:25,886 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 21 states have internal predecessors, (81), 12 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) Word has length 240 [2023-12-16 17:49:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:25,886 INFO L225 Difference]: With dead ends: 181 [2023-12-16 17:49:25,886 INFO L226 Difference]: Without dead ends: 93 [2023-12-16 17:49:25,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 17:49:25,887 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 49 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:25,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 504 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 17:49:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-16 17:49:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-16 17:49:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 70 states have internal predecessors, (81), 11 states have call successors, (11), 4 states have call predecessors, (11), 15 states have return successors, (22), 18 states have call predecessors, (22), 11 states have call successors, (22) [2023-12-16 17:49:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 114 transitions. [2023-12-16 17:49:25,891 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 114 transitions. Word has length 240 [2023-12-16 17:49:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:25,892 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 114 transitions. [2023-12-16 17:49:25,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 21 states have internal predecessors, (81), 12 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) [2023-12-16 17:49:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 114 transitions. [2023-12-16 17:49:25,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-16 17:49:25,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:25,894 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2023-12-16 17:49:25,900 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 [2023-12-16 17:49:26,094 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 [2023-12-16 17:49:26,095 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:26,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash 634067048, now seen corresponding path program 3 times [2023-12-16 17:49:26,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:26,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845629642] [2023-12-16 17:49:26,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:49:26,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:26,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:26,097 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) [2023-12-16 17:49:26,100 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 [2023-12-16 17:49:26,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 17:49:26,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:26,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 17:49:26,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:26,316 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 11 treesize of output 7 [2023-12-16 17:49:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4297 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 4267 trivial. 0 not checked. [2023-12-16 17:49:26,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4297 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 4266 trivial. 0 not checked. [2023-12-16 17:49:27,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:27,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845629642] [2023-12-16 17:49:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845629642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:27,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:27,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2023-12-16 17:49:27,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889670830] [2023-12-16 17:49:27,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:49:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:49:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:49:27,301 INFO L87 Difference]: Start difference. First operand 93 states and 114 transitions. Second operand has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 7 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-16 17:49:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:27,786 INFO L93 Difference]: Finished difference Result 185 states and 231 transitions. [2023-12-16 17:49:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:49:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 7 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 322 [2023-12-16 17:49:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:27,787 INFO L225 Difference]: With dead ends: 185 [2023-12-16 17:49:27,787 INFO L226 Difference]: Without dead ends: 95 [2023-12-16 17:49:27,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:49:27,788 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:27,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 192 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 17:49:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-16 17:49:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-16 17:49:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 11 states have call successors, (11), 4 states have call predecessors, (11), 16 states have return successors, (23), 19 states have call predecessors, (23), 11 states have call successors, (23) [2023-12-16 17:49:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2023-12-16 17:49:27,792 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 322 [2023-12-16 17:49:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:27,793 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2023-12-16 17:49:27,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 7 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-16 17:49:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2023-12-16 17:49:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-12-16 17:49:27,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:27,795 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 72, 72, 72, 16, 16, 12, 12, 12, 12, 12, 12, 12, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:27,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:27,998 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 [2023-12-16 17:49:27,998 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:27,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 251910514, now seen corresponding path program 4 times [2023-12-16 17:49:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880086118] [2023-12-16 17:49:27,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:49:27,999 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 [2023-12-16 17:49:27,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:28,000 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) [2023-12-16 17:49:28,003 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 [2023-12-16 17:49:28,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:49:28,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:28,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-16 17:49:28,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:28,752 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 11 treesize of output 7 [2023-12-16 17:49:28,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 17:49:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 17398 backedges. 6573 proven. 125 refuted. 0 times theorem prover too weak. 10700 trivial. 0 not checked. [2023-12-16 17:49:29,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17398 backedges. 12 proven. 339 refuted. 0 times theorem prover too weak. 17047 trivial. 0 not checked. [2023-12-16 17:49:32,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880086118] [2023-12-16 17:49:32,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880086118] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:32,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:32,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 31 [2023-12-16 17:49:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104419623] [2023-12-16 17:49:32,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 17:49:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 17:49:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:49:32,584 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand has 31 states, 23 states have (on average 3.739130434782609) internal successors, (86), 25 states have internal predecessors, (86), 14 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (34), 12 states have call predecessors, (34), 14 states have call successors, (34) [2023-12-16 17:49:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:33,942 INFO L93 Difference]: Finished difference Result 189 states and 240 transitions. [2023-12-16 17:49:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:49:33,943 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 3.739130434782609) internal successors, (86), 25 states have internal predecessors, (86), 14 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (34), 12 states have call predecessors, (34), 14 states have call successors, (34) Word has length 612 [2023-12-16 17:49:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:33,944 INFO L225 Difference]: With dead ends: 189 [2023-12-16 17:49:33,944 INFO L226 Difference]: Without dead ends: 97 [2023-12-16 17:49:33,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=244, Invalid=1396, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 17:49:33,945 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 52 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:33,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 545 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:49:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-16 17:49:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-16 17:49:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 72 states have internal predecessors, (83), 11 states have call successors, (11), 4 states have call predecessors, (11), 17 states have return successors, (24), 20 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-16 17:49:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2023-12-16 17:49:33,954 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 612 [2023-12-16 17:49:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:33,955 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2023-12-16 17:49:33,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 3.739130434782609) internal successors, (86), 25 states have internal predecessors, (86), 14 states have call successors, (32), 8 states have call predecessors, (32), 10 states have return successors, (34), 12 states have call predecessors, (34), 14 states have call successors, (34) [2023-12-16 17:49:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2023-12-16 17:49:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-16 17:49:33,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:33,962 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 96, 96, 96, 20, 20, 16, 16, 16, 16, 16, 16, 16, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:33,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:34,176 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:34,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1484536294, now seen corresponding path program 5 times [2023-12-16 17:49:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:34,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456151145] [2023-12-16 17:49:34,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:49:34,178 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 [2023-12-16 17:49:34,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:34,259 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:49:34,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 17:49:37,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-16 17:49:37,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:37,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-16 17:49:37,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:37,798 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 11 treesize of output 7 [2023-12-16 17:49:37,867 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 11 treesize of output 7 [2023-12-16 17:49:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30764 backedges. 11677 proven. 179 refuted. 0 times theorem prover too weak. 18908 trivial. 0 not checked. [2023-12-16 17:49:38,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 30764 backedges. 12 proven. 535 refuted. 0 times theorem prover too weak. 30217 trivial. 0 not checked. [2023-12-16 17:49:44,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:44,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456151145] [2023-12-16 17:49:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456151145] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:44,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36 [2023-12-16 17:49:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038510744] [2023-12-16 17:49:44,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:44,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-16 17:49:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-16 17:49:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 17:49:44,064 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 36 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 29 states have internal predecessors, (91), 16 states have call successors, (34), 9 states have call predecessors, (34), 12 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) [2023-12-16 17:49:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:46,024 INFO L93 Difference]: Finished difference Result 193 states and 244 transitions. [2023-12-16 17:49:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:49:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 29 states have internal predecessors, (91), 16 states have call successors, (34), 9 states have call predecessors, (34), 12 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) Word has length 776 [2023-12-16 17:49:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:46,025 INFO L225 Difference]: With dead ends: 193 [2023-12-16 17:49:46,025 INFO L226 Difference]: Without dead ends: 99 [2023-12-16 17:49:46,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1516 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=302, Invalid=1860, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 17:49:46,026 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 46 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:46,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 779 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 17:49:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-12-16 17:49:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-12-16 17:49:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 73 states have internal predecessors, (84), 11 states have call successors, (11), 4 states have call predecessors, (11), 18 states have return successors, (25), 21 states have call predecessors, (25), 11 states have call successors, (25) [2023-12-16 17:49:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2023-12-16 17:49:46,031 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 776 [2023-12-16 17:49:46,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:46,031 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2023-12-16 17:49:46,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 29 states have internal predecessors, (91), 16 states have call successors, (34), 9 states have call predecessors, (34), 12 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) [2023-12-16 17:49:46,031 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2023-12-16 17:49:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2023-12-16 17:49:46,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:46,036 INFO L195 NwaCegarLoop]: trace histogram [140, 140, 120, 120, 120, 24, 24, 20, 20, 20, 20, 20, 20, 20, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:46,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 17:49:46,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:49:46,237 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:46,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 440909554, now seen corresponding path program 6 times [2023-12-16 17:49:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146651943] [2023-12-16 17:49:46,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:49:46,238 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 [2023-12-16 17:49:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:46,253 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) [2023-12-16 17:49:46,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 17:49:46,707 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-16 17:49:46,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:49:46,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:49:46,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 47954 backedges. 24208 proven. 1 refuted. 0 times theorem prover too weak. 23745 trivial. 0 not checked. [2023-12-16 17:49:46,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:49:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 47954 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 47945 trivial. 0 not checked. [2023-12-16 17:49:49,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:49:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146651943] [2023-12-16 17:49:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146651943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:49:49,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:49:49,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 17:49:49,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494163818] [2023-12-16 17:49:49,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:49:49,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:49:49,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:49:49,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:49:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:49:49,297 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-16 17:49:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:49:49,389 INFO L93 Difference]: Finished difference Result 228 states and 292 transitions. [2023-12-16 17:49:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:49:49,390 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), 4 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 940 [2023-12-16 17:49:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:49:49,391 INFO L225 Difference]: With dead ends: 228 [2023-12-16 17:49:49,391 INFO L226 Difference]: Without dead ends: 135 [2023-12-16 17:49:49,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1874 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:49:49,392 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:49:49,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 205 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:49:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-16 17:49:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-12-16 17:49:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 97 states have internal predecessors, (108), 23 states have call successors, (23), 4 states have call predecessors, (23), 18 states have return successors, (37), 33 states have call predecessors, (37), 23 states have call successors, (37) [2023-12-16 17:49:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2023-12-16 17:49:49,398 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 940 [2023-12-16 17:49:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:49:49,401 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2023-12-16 17:49:49,401 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), 4 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-16 17:49:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2023-12-16 17:49:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3707 [2023-12-16 17:49:49,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:49:49,521 INFO L195 NwaCegarLoop]: trace histogram [560, 560, 480, 480, 480, 96, 96, 80, 80, 80, 80, 80, 80, 80, 32, 32, 24, 24, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:49:49,530 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 [2023-12-16 17:49:49,724 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 [2023-12-16 17:49:49,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:49:49,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:49:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1527819784, now seen corresponding path program 7 times [2023-12-16 17:49:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:49:49,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047365561] [2023-12-16 17:49:49,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:49:49,729 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 [2023-12-16 17:49:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:49:49,730 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) [2023-12-16 17:49:49,738 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 [2023-12-16 17:49:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:49:54,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 10727 conjuncts, 92 conjunts are in the unsatisfiable core [2023-12-16 17:49:54,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:49:54,464 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 11 treesize of output 7 [2023-12-16 17:49:54,494 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 11 treesize of output 7 [2023-12-16 17:49:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 772673 backedges. 90441 proven. 391 refuted. 0 times theorem prover too weak. 681841 trivial. 0 not checked. [2023-12-16 17:49:55,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:50:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 772673 backedges. 24 proven. 3552 refuted. 0 times theorem prover too weak. 769097 trivial. 0 not checked. [2023-12-16 17:50:06,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:50:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047365561] [2023-12-16 17:50:06,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047365561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:50:06,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:50:06,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26] total 41 [2023-12-16 17:50:06,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382473553] [2023-12-16 17:50:06,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:50:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-16 17:50:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:50:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-16 17:50:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 17:50:06,242 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 41 states, 31 states have (on average 3.096774193548387) internal successors, (96), 33 states have internal predecessors, (96), 18 states have call successors, (36), 10 states have call predecessors, (36), 14 states have return successors, (40), 18 states have call predecessors, (40), 18 states have call successors, (40) Received shutdown request... [2023-12-16 17:50:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:50:08,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7421 GetRequests, 7371 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=341, Invalid=2209, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 17:50:08,275 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 130 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:50:08,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 278 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 17:50:08,276 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:50:08,285 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:50:08,285 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:50:08,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 17:50:08,477 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 [2023-12-16 17:50:08,477 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (135states) and FLOYD_HOARE automaton (currently 14 states, 41 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. [2023-12-16 17:50:08,480 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 17:50:08,482 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:50:08,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:50:08 BoogieIcfgContainer [2023-12-16 17:50:08,483 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:50:08,483 INFO L158 Benchmark]: Toolchain (without parser) took 73099.52ms. Allocated memory was 249.6MB in the beginning and 625.0MB in the end (delta: 375.4MB). Free memory was 209.4MB in the beginning and 247.8MB in the end (delta: -38.3MB). Peak memory consumption was 337.1MB. Max. memory is 8.0GB. [2023-12-16 17:50:08,483 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 181.4MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:50:08,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.44ms. Allocated memory is still 249.6MB. Free memory was 209.4MB in the beginning and 197.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 17:50:08,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.62ms. Allocated memory is still 249.6MB. Free memory was 197.4MB in the beginning and 195.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 17:50:08,484 INFO L158 Benchmark]: Boogie Preprocessor took 48.52ms. Allocated memory is still 249.6MB. Free memory was 195.8MB in the beginning and 193.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 17:50:08,484 INFO L158 Benchmark]: RCFGBuilder took 416.54ms. Allocated memory is still 249.6MB. Free memory was 193.2MB in the beginning and 172.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 17:50:08,484 INFO L158 Benchmark]: TraceAbstraction took 72417.61ms. Allocated memory was 249.6MB in the beginning and 625.0MB in the end (delta: 375.4MB). Free memory was 171.7MB in the beginning and 247.8MB in the end (delta: -76.1MB). Peak memory consumption was 299.3MB. Max. memory is 8.0GB. [2023-12-16 17:50:08,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 181.4MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.44ms. Allocated memory is still 249.6MB. Free memory was 209.4MB in the beginning and 197.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.62ms. Allocated memory is still 249.6MB. Free memory was 197.4MB in the beginning and 195.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.52ms. Allocated memory is still 249.6MB. Free memory was 195.8MB in the beginning and 193.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 416.54ms. Allocated memory is still 249.6MB. Free memory was 193.2MB in the beginning and 172.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 72417.61ms. Allocated memory was 249.6MB in the beginning and 625.0MB in the end (delta: 375.4MB). Free memory was 171.7MB in the beginning and 247.8MB in the end (delta: -76.1MB). Peak memory consumption was 299.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 133). Cancelled while NwaCegarLoop was constructing difference of abstraction (135states) and FLOYD_HOARE automaton (currently 14 states, 41 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.4s, OverallIterations: 22, TraceHistogramMax: 560, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.2s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 833 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 809 mSDsluCounter, 7429 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6427 mSDsCounter, 440 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4423 IncrementalHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 440 mSolverCounterUnsat, 1002 mSDtfsCounter, 4423 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15406 GetRequests, 14999 SyntacticMatches, 0 SemanticMatches, 406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2558 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=21, InterpolantAutomatonStates: 183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 8.2s SatisfiabilityAnalysisTime, 42.4s InterpolantComputationTime, 7988 NumberOfCodeBlocks, 6283 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 15316 ConstructedInterpolants, 0 QuantifiedInterpolants, 22695 SizeOfPredicates, 183 NumberOfNonLiveVariables, 19282 ConjunctsInSsa, 555 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 1748406/1754359 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown