/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_nla-digbench/recursified_hard-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:56:11,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:56:11,655 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:56:11,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:56:11,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:56:11,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:56:11,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:56:11,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:56:11,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:56:11,693 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:56:11,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:56:11,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:56:11,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:56:11,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:56:11,695 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:56:11,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:56:11,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:56:11,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:56:11,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:56:11,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:56:11,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:56:11,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:56:11,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:56:11,697 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:56:11,697 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:56:11,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:56:11,697 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:56:11,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:56:11,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:56:11,698 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:56:11,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:56:11,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:56:11,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:56:11,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:56:11,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:56:11,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:56:11,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:56:11,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:56:11,700 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:56:11,700 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:56:11,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:56:11,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:56:11,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:56:11,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:56:11,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:56:11,701 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:56:11,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:56:11,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:56:11,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:56:11,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:56:11,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:56:11,917 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:56:11,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_nla-digbench/recursified_hard-ll.c [2023-12-25 06:56:12,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:56:13,097 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:56:13,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_nla-digbench/recursified_hard-ll.c [2023-12-25 06:56:13,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d5af2bfc/fd7e59d71a8b499f9fe48fb5639bfa8b/FLAGbb19bf940 [2023-12-25 06:56:13,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d5af2bfc/fd7e59d71a8b499f9fe48fb5639bfa8b [2023-12-25 06:56:13,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:56:13,122 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:56:13,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:56:13,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:56:13,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:56:13,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376b0d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13, skipping insertion in model container [2023-12-25 06:56:13,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:56:13,267 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_nla-digbench/recursified_hard-ll.c[1083,1096] [2023-12-25 06:56:13,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:56:13,308 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:56:13,317 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_nla-digbench/recursified_hard-ll.c[1083,1096] [2023-12-25 06:56:13,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:56:13,340 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:56:13,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13 WrapperNode [2023-12-25 06:56:13,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:56:13,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:56:13,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:56:13,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:56:13,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,366 INFO L138 Inliner]: procedures = 21, calls = 84, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-12-25 06:56:13,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:56:13,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:56:13,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:56:13,367 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:56:13,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,407 INFO L175 MemorySlicer]: Split 49 memory accesses to 7 slices as follows [2, 5, 6, 9, 7, 8, 12]. 24 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 1, 2, 3, 1, 2, 3]. [2023-12-25 06:56:13,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:56:13,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:56:13,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:56:13,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:56:13,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (1/1) ... [2023-12-25 06:56:13,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:56:13,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:56:13,494 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) [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-25 06:56:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_51_0 [2023-12-25 06:56:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_51_0 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_38_0 [2023-12-25 06:56:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_38_0 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#0 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#1 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#2 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#3 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#4 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#5 [2023-12-25 06:56:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#6 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:56:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#0 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#1 [2023-12-25 06:56:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#2 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#3 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#4 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#5 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#6 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 06:56:13,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-25 06:56:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-12-25 06:56:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-12-25 06:56:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-12-25 06:56:13,526 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 [2023-12-25 06:56:13,679 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:56:13,683 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:56:14,555 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:56:14,586 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:56:14,586 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-25 06:56:14,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:56:14 BoogieIcfgContainer [2023-12-25 06:56:14,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:56:14,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:56:14,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:56:14,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:56:14,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:56:13" (1/3) ... [2023-12-25 06:56:14,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c9c599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:56:14, skipping insertion in model container [2023-12-25 06:56:14,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:56:13" (2/3) ... [2023-12-25 06:56:14,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c9c599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:56:14, skipping insertion in model container [2023-12-25 06:56:14,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:56:14" (3/3) ... [2023-12-25 06:56:14,594 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard-ll.c [2023-12-25 06:56:14,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:56:14,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:56:14,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:56:14,643 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;@6f09243c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:56:14,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:56:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-25 06:56:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:56:14,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:56:14,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:56:14,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:56:14,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:56:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1915466635, now seen corresponding path program 1 times [2023-12-25 06:56:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:56:14,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195973594] [2023-12-25 06:56:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:56:14,680 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 [2023-12-25 06:56:14,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:56:14,683 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) [2023-12-25 06:56:14,690 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 [2023-12-25 06:56:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:56:14,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:56:14,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:56:14,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-25 06:56:14,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-25 06:56:15,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:56:15,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-12-25 06:56:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:56:15,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:56:15,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:56:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195973594] [2023-12-25 06:56:15,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195973594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:56:15,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:56:15,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 06:56:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165538364] [2023-12-25 06:56:15,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:56:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:56:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:56:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:56:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:56:15,225 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:56:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:56:16,508 INFO L93 Difference]: Finished difference Result 82 states and 120 transitions. [2023-12-25 06:56:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:56:16,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-25 06:56:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:56:16,515 INFO L225 Difference]: With dead ends: 82 [2023-12-25 06:56:16,515 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:56:16,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:56:16,519 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:56:16,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 226 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 06:56:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:56:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-25 06:56:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 29 states have internal predecessors, (30), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 06:56:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-12-25 06:56:16,560 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 10 [2023-12-25 06:56:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:56:16,560 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-12-25 06:56:16,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 06:56:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-12-25 06:56:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-25 06:56:16,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:56:16,561 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:56:16,569 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 [2023-12-25 06:56:16,769 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 [2023-12-25 06:56:16,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:56:16,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:56:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash 880062118, now seen corresponding path program 1 times [2023-12-25 06:56:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:56:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673455646] [2023-12-25 06:56:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:56:16,771 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 [2023-12-25 06:56:16,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:56:16,772 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) [2023-12-25 06:56:16,774 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 [2023-12-25 06:56:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:56:16,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 06:56:16,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:56:16,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2023-12-25 06:56:17,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-25 06:56:17,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:56:17,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2023-12-25 06:56:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:56:17,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:56:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:56:17,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:56:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673455646] [2023-12-25 06:56:17,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673455646] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 06:56:17,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 06:56:17,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-12-25 06:56:17,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472761495] [2023-12-25 06:56:17,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:56:17,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 06:56:17,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:56:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 06:56:17,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:56:17,541 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:56:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:56:19,010 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2023-12-25 06:56:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:56:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-25 06:56:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:56:19,013 INFO L225 Difference]: With dead ends: 48 [2023-12-25 06:56:19,013 INFO L226 Difference]: Without dead ends: 46 [2023-12-25 06:56:19,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:56:19,014 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 18 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:56:19,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 224 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 06:56:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-25 06:56:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-25 06:56:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-25 06:56:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2023-12-25 06:56:19,040 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 16 [2023-12-25 06:56:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:56:19,041 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2023-12-25 06:56:19,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:56:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2023-12-25 06:56:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:56:19,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:56:19,041 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:56:19,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 06:56:19,251 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 [2023-12-25 06:56:19,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:56:19,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:56:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1956934271, now seen corresponding path program 1 times [2023-12-25 06:56:19,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:56:19,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775494099] [2023-12-25 06:56:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:56:19,254 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 [2023-12-25 06:56:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:56:19,256 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) [2023-12-25 06:56:19,260 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 (4)] Waiting until timeout for monitored process [2023-12-25 06:56:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:56:19,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:56:19,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:56:19,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2023-12-25 06:56:19,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-25 06:56:19,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-25 06:56:20,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:56:20,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-12-25 06:56:20,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-25 06:56:20,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:56:20,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2023-12-25 06:56:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:56:20,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:56:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:56:26,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:56:26,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775494099] [2023-12-25 06:56:26,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775494099] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 06:56:26,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 06:56:26,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-12-25 06:56:26,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242409163] [2023-12-25 06:56:26,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:56:26,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 06:56:26,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:56:26,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 06:56:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:56:26,010 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 06:56:47,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-25 06:56:51,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-25 06:56:56,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-25 06:56:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:56:58,298 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2023-12-25 06:56:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:56:58,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-25 06:56:58,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:56:58,317 INFO L225 Difference]: With dead ends: 64 [2023-12-25 06:56:58,317 INFO L226 Difference]: Without dead ends: 62 [2023-12-25 06:56:58,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:56:58,318 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:56:58,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 238 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 2 Unknown, 0 Unchecked, 24.4s Time] [2023-12-25 06:56:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-25 06:56:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2023-12-25 06:56:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-25 06:56:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-12-25 06:56:58,346 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 22 [2023-12-25 06:56:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:56:58,346 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-12-25 06:56:58,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 06:56:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-12-25 06:56:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 06:56:58,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:56:58,347 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:56:58,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-25 06:56:58,548 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 [2023-12-25 06:56:58,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:56:58,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:56:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1106443508, now seen corresponding path program 1 times [2023-12-25 06:56:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:56:58,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080608722] [2023-12-25 06:56:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:56:58,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:56:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:56:58,557 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) [2023-12-25 06:56:58,558 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 [2023-12-25 06:56:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:56:58,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-25 06:56:58,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:56:58,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2023-12-25 06:56:58,803 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-25 06:56:58,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-25 06:57:01,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-25 06:57:01,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:57:01,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2023-12-25 06:57:01,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:57:01,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-12-25 06:57:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 06:57:01,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:57:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 8 refuted. 2 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:57:14,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:57:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080608722] [2023-12-25 06:57:14,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080608722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:57:14,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:57:14,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2023-12-25 06:57:14,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685848649] [2023-12-25 06:57:14,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:57:14,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 06:57:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:57:14,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 06:57:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=818, Unknown=1, NotChecked=0, Total=930 [2023-12-25 06:57:14,606 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 31 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 10 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 06:57:25,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 06:57:29,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 06:57:33,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 06:57:35,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 06:57:39,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-25 06:57:44,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 06:57:46,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-25 06:57:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:57:47,072 INFO L93 Difference]: Finished difference Result 96 states and 115 transitions. [2023-12-25 06:57:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:57:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 10 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Word has length 34 [2023-12-25 06:57:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:57:47,093 INFO L225 Difference]: With dead ends: 96 [2023-12-25 06:57:47,094 INFO L226 Difference]: Without dead ends: 94 [2023-12-25 06:57:47,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=214, Invalid=1425, Unknown=1, NotChecked=0, Total=1640 [2023-12-25 06:57:47,095 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 62 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:57:47,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 295 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 528 Invalid, 4 Unknown, 0 Unchecked, 30.7s Time] [2023-12-25 06:57:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-25 06:57:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2023-12-25 06:57:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 58 states have internal predecessors, (62), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (20), 18 states have call predecessors, (20), 17 states have call successors, (20) [2023-12-25 06:57:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2023-12-25 06:57:47,118 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 34 [2023-12-25 06:57:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:57:47,119 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2023-12-25 06:57:47,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 10 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 06:57:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2023-12-25 06:57:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-25 06:57:47,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:57:47,120 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:57:47,130 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 [2023-12-25 06:57:47,322 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 [2023-12-25 06:57:47,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:57:47,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:57:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash -60903716, now seen corresponding path program 1 times [2023-12-25 06:57:47,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:57:47,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376634157] [2023-12-25 06:57:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:57:47,326 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 [2023-12-25 06:57:47,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:57:47,328 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) [2023-12-25 06:57:47,329 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 [2023-12-25 06:57:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:57:47,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 06:57:47,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:58:05,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2023-12-25 06:58:05,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:58:05,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-12-25 06:58:05,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:58:05,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2023-12-25 06:58:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 06:58:10,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:58:57,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:58:57,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 73 [2023-12-25 06:58:58,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:58:58,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 90 [2023-12-25 06:58:59,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-25 06:58:59,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 70 [2023-12-25 07:01:17,269 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 07:02:05,620 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 07:06:01,558 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-25 07:10:56,760 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 [2023-12-25 07:10:56,775 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 07:10:57,798 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 [2023-12-25 07:10:57,961 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-25 07:10:57,986 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 07:10:57,987 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 41 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-25 07:10:57,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-25 07:10:57,992 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-25 07:10:58,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 07:10:58,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 07:10:58 BoogieIcfgContainer [2023-12-25 07:10:58,012 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 07:10:58,013 INFO L158 Benchmark]: Toolchain (without parser) took 884890.92ms. Allocated memory was 198.2MB in the beginning and 337.6MB in the end (delta: 139.5MB). Free memory was 147.7MB in the beginning and 121.0MB in the end (delta: 26.7MB). Peak memory consumption was 188.9MB. Max. memory is 8.0GB. [2023-12-25 07:10:58,013 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 07:10:58,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.01ms. Allocated memory is still 198.2MB. Free memory was 147.4MB in the beginning and 134.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-25 07:10:58,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.58ms. Allocated memory is still 198.2MB. Free memory was 134.8MB in the beginning and 133.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 07:10:58,013 INFO L158 Benchmark]: Boogie Preprocessor took 60.28ms. Allocated memory is still 198.2MB. Free memory was 133.1MB in the beginning and 130.3MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-25 07:10:58,014 INFO L158 Benchmark]: RCFGBuilder took 1158.89ms. Allocated memory was 198.2MB in the beginning and 337.6MB in the end (delta: 139.5MB). Free memory was 129.9MB in the beginning and 301.4MB in the end (delta: -171.5MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-25 07:10:58,014 INFO L158 Benchmark]: TraceAbstraction took 883423.55ms. Allocated memory is still 337.6MB. Free memory was 300.9MB in the beginning and 121.0MB in the end (delta: 179.9MB). Peak memory consumption was 201.4MB. Max. memory is 8.0GB. [2023-12-25 07:10:58,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.01ms. Allocated memory is still 198.2MB. Free memory was 147.4MB in the beginning and 134.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.58ms. Allocated memory is still 198.2MB. Free memory was 134.8MB in the beginning and 133.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.28ms. Allocated memory is still 198.2MB. Free memory was 133.1MB in the beginning and 130.3MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1158.89ms. Allocated memory was 198.2MB in the beginning and 337.6MB in the end (delta: 139.5MB). Free memory was 129.9MB in the beginning and 301.4MB in the end (delta: -171.5MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 883423.55ms. Allocated memory is still 337.6MB. Free memory was 300.9MB in the beginning and 121.0MB in the end (delta: 179.9MB). Peak memory consumption was 201.4MB. 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: 41]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 41). Cancelled while NwaCegarLoop was analyzing trace of length 41 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 883.4s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 67.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 57.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 135 mSDsluCounter, 983 SdHoareTripleChecker+Invalid, 55.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 835 mSDsCounter, 91 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 824 IncrementalHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 91 mSolverCounterUnsat, 148 mSDtfsCounter, 824 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 76 SyntacticMatches, 9 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=4, InterpolantAutomatonStates: 47, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 147 ConstructedInterpolants, 41 QuantifiedInterpolants, 4382 SizeOfPredicates, 71 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 28/56 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