/usr/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/float-benchs/mea8000.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:44:02,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:44:02,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:44:02,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:44:02,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:44:02,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:44:02,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:44:02,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:44:02,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:44:02,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:44:02,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:44:02,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:44:02,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:44:02,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:44:02,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:44:02,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:44:02,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:44:02,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:44:02,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:44:02,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:44:02,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:44:02,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:44:02,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:44:02,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:44:02,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:44:02,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:44:02,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:44:02,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:44:02,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:44:02,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:44:02,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:44:02,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:44:02,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:44:02,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:44:02,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:44:02,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:44:02,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:44:02,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:44:02,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:44:02,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:44:02,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:44:02,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:44:02,176 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:44:02,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:44:02,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:44:02,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:44:02,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:44:02,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:44:02,178 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:44:02,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:44:02,178 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:44:02,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:44:02,178 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:44:02,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:44:02,179 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:44:02,179 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:44:02,179 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:44:02,179 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:44:02,179 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:44:02,179 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:44:02,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:44:02,180 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:44:02,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:44:02,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:44:02,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:44:02,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:44:02,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:44:02,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:44:02,183 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:44:02,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:44:02,184 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:44:02,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:44:02,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:44:02,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:44:02,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:44:02,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:44:02,185 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:44:02,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:44:02,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:44:02,186 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:44:02,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:44:02,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:44:02,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:44:02,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:44:02,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:44:02,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:44:02,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:44:02,437 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:44:02,437 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:44:02,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/mea8000.c [2023-03-31 22:44:03,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:44:03,886 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:44:03,886 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/mea8000.c [2023-03-31 22:44:03,900 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00584271/4a4bc7a28d8b48a2a25ae8d4ace8c9f8/FLAG13f3e8d6e [2023-03-31 22:44:03,916 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00584271/4a4bc7a28d8b48a2a25ae8d4ace8c9f8 [2023-03-31 22:44:03,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:44:03,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:44:03,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:44:03,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:44:03,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:44:03,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:44:03" (1/1) ... [2023-03-31 22:44:03,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb420d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:03, skipping insertion in model container [2023-03-31 22:44:03,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:44:03" (1/1) ... [2023-03-31 22:44:03,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:44:03,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:44:04,138 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/mea8000.c[649,662] [2023-03-31 22:44:04,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:44:04,242 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:44:04,251 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/mea8000.c[649,662] [2023-03-31 22:44:04,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:44:04,318 WARN L667 CHandler]: The function __VERIFIER_nondet_unsigned_char is called, but not defined or handled by StandardFunctionHandler. [2023-03-31 22:44:04,324 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:44:04,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04 WrapperNode [2023-03-31 22:44:04,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:44:04,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:44:04,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:44:04,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:44:04,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,393 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:44:04,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:44:04,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:44:04,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:44:04,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (1/1) ... [2023-03-31 22:44:04,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:44:04,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:44:04,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 22:44:04,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 22:44:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:44:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:44:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:44:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:44:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 22:44:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure cos [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure exp [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rand [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure write_signed16 [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure device_start [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure device_reset [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure accept_byte [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure update_req [2023-03-31 22:44:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tables [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure interp [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure filter_step [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure noise_gen [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_gen [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_sample [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure shift_frame [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_frame [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure start_frame [2023-03-31 22:44:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_frame [2023-03-31 22:44:04,487 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_expire [2023-03-31 22:44:04,487 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2023-03-31 22:44:04,487 INFO L138 BoogieDeclarations]: Found implementation of procedure write [2023-03-31 22:44:04,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:44:04,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:44:04,487 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:44:04,487 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:44:04,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure cos [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure exp [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:44:04,488 INFO L130 BoogieDeclarations]: Found specification of procedure write_signed16 [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure device_start [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure device_reset [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure accept_byte [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure update_req [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure init_tables [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure interp [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure filter_step [2023-03-31 22:44:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure noise_gen [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure freq_gen [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure compute_sample [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure shift_frame [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure decode_frame [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure start_frame [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure stop_frame [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:44:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure timer_expire [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:44:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:44:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:44:04,672 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:44:04,675 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:44:05,358 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:44:05,573 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:44:05,573 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-03-31 22:44:05,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:44:05 BoogieIcfgContainer [2023-03-31 22:44:05,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:44:05,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:44:05,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:44:05,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:44:05,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:44:03" (1/3) ... [2023-03-31 22:44:05,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74979dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:44:05, skipping insertion in model container [2023-03-31 22:44:05,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:44:04" (2/3) ... [2023-03-31 22:44:05,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74979dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:44:05, skipping insertion in model container [2023-03-31 22:44:05,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:44:05" (3/3) ... [2023-03-31 22:44:05,587 INFO L112 eAbstractionObserver]: Analyzing ICFG mea8000.c [2023-03-31 22:44:05,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:44:05,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:44:05,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:44:05,658 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@b34bdb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:44:05,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:44:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 98 states have internal predecessors, (113), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 40 states have call predecessors, (45), 45 states have call successors, (45) [2023-03-31 22:44:05,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 22:44:05,672 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:44:05,673 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, 1, 1, 1, 1] [2023-03-31 22:44:05,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:44:05,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:44:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash 552949486, now seen corresponding path program 1 times [2023-03-31 22:44:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:44:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513807743] [2023-03-31 22:44:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:44:05,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 22:44:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879268688] [2023-03-31 22:44:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:05,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:44:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:44:05,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:44:05,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:44:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:44:06,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-31 22:44:06,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:44:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:44:06,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:44:06,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:44:06,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513807743] [2023-03-31 22:44:06,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 22:44:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879268688] [2023-03-31 22:44:06,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879268688] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:44:06,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:44:06,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:44:06,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642677229] [2023-03-31 22:44:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:44:06,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:44:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:44:06,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:44:06,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:44:06,218 INFO L87 Difference]: Start difference. First operand has 157 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 98 states have internal predecessors, (113), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 40 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 22:44:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:44:06,465 INFO L93 Difference]: Finished difference Result 304 states and 413 transitions. [2023-03-31 22:44:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:44:06,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-03-31 22:44:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:44:06,485 INFO L225 Difference]: With dead ends: 304 [2023-03-31 22:44:06,485 INFO L226 Difference]: Without dead ends: 161 [2023-03-31 22:44:06,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:44:06,498 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 3 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:44:06,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 337 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 22:44:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-03-31 22:44:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2023-03-31 22:44:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 97 states have internal predecessors, (111), 45 states have call successors, (45), 25 states have call predecessors, (45), 24 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2023-03-31 22:44:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 200 transitions. [2023-03-31 22:44:06,556 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 200 transitions. Word has length 26 [2023-03-31 22:44:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:44:06,556 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 200 transitions. [2023-03-31 22:44:06,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 22:44:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 200 transitions. [2023-03-31 22:44:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-31 22:44:06,559 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:44:06,559 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-03-31 22:44:06,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 22:44:06,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-03-31 22:44:06,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:44:06,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:44:06,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1679135060, now seen corresponding path program 1 times [2023-03-31 22:44:06,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:44:06,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596728832] [2023-03-31 22:44:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:06,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:44:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:44:06,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:44:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596728832] [2023-03-31 22:44:06,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-03-31 22:44:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432032017] [2023-03-31 22:44:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:06,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:44:06,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:44:06,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:44:06,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:44:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:44:07,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-31 22:44:07,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:44:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:44:07,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:44:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432032017] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:44:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:44:07,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:44:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388891753] [2023-03-31 22:44:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:44:07,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:44:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:44:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:44:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:44:07,237 INFO L87 Difference]: Start difference. First operand 155 states and 200 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-03-31 22:44:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:44:07,484 INFO L93 Difference]: Finished difference Result 293 states and 380 transitions. [2023-03-31 22:44:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:44:07,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 53 [2023-03-31 22:44:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:44:07,492 INFO L225 Difference]: With dead ends: 293 [2023-03-31 22:44:07,492 INFO L226 Difference]: Without dead ends: 158 [2023-03-31 22:44:07,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:44:07,496 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:44:07,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 342 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 22:44:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-03-31 22:44:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-03-31 22:44:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 86 states have (on average 1.302325581395349) internal successors, (112), 98 states have internal predecessors, (112), 45 states have call successors, (45), 25 states have call predecessors, (45), 24 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2023-03-31 22:44:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 201 transitions. [2023-03-31 22:44:07,523 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 201 transitions. Word has length 53 [2023-03-31 22:44:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:44:07,524 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 201 transitions. [2023-03-31 22:44:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-03-31 22:44:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 201 transitions. [2023-03-31 22:44:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 22:44:07,532 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:44:07,532 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1] [2023-03-31 22:44:07,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:44:07,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-03-31 22:44:07,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:44:07,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:44:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1223667682, now seen corresponding path program 1 times [2023-03-31 22:44:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:44:07,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131841266] [2023-03-31 22:44:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:44:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:44:07,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:44:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131841266] [2023-03-31 22:44:07,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-03-31 22:44:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678897933] [2023-03-31 22:44:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:44:07,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:44:07,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:44:07,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 22:44:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:44:08,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 22:44:08,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:44:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:44:08,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:44:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:44:08,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678897933] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:44:08,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1558583373] [2023-03-31 22:44:08,291 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-03-31 22:44:08,291 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:44:08,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:44:08,299 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:44:08,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:44:10,863 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 140 for LOIs [2023-03-31 22:44:11,450 INFO L197 IcfgInterpreter]: Interpreting procedure device_start with input of size 108 for LOIs [2023-03-31 22:44:11,624 INFO L197 IcfgInterpreter]: Interpreting procedure init_tables with input of size 108 for LOIs [2023-03-31 22:44:13,408 INFO L197 IcfgInterpreter]: Interpreting procedure exp with input of size 93 for LOIs [2023-03-31 22:44:13,595 INFO L197 IcfgInterpreter]: Interpreting procedure cos with input of size 103 for LOIs [2023-03-31 22:44:14,066 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 6 for LOIs [2023-03-31 22:44:14,068 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 133 for LOIs [2023-03-31 22:44:14,559 INFO L197 IcfgInterpreter]: Interpreting procedure rand with input of size 93 for LOIs [2023-03-31 22:44:14,570 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 22:44:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1558583373] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:44:20,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-31 22:44:20,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4] total 31 [2023-03-31 22:44:20,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573102019] [2023-03-31 22:44:20,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:44:20,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-03-31 22:44:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:44:20,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-03-31 22:44:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=818, Unknown=7, NotChecked=0, Total=930 [2023-03-31 22:44:20,164 INFO L87 Difference]: Start difference. First operand 156 states and 201 transitions. Second operand has 27 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 20 states have internal predecessors, (29), 11 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 22:44:23,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:28,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:32,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:34,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:38,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:43,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:47,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:52,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:54,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-03-31 22:44:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:44:55,202 INFO L93 Difference]: Finished difference Result 344 states and 445 transitions. [2023-03-31 22:44:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-03-31 22:44:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 20 states have internal predecessors, (29), 11 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) Word has length 58 [2023-03-31 22:44:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:44:55,204 INFO L225 Difference]: With dead ends: 344 [2023-03-31 22:44:55,204 INFO L226 Difference]: Without dead ends: 212 [2023-03-31 22:44:55,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=279, Invalid=2155, Unknown=16, NotChecked=0, Total=2450 [2023-03-31 22:44:55,207 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 152 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 126 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-03-31 22:44:55,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 508 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1970 Invalid, 15 Unknown, 0 Unchecked, 21.7s Time] [2023-03-31 22:44:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-03-31 22:44:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204. [2023-03-31 22:44:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 116 states have (on average 1.3017241379310345) internal successors, (151), 131 states have internal predecessors, (151), 54 states have call successors, (54), 33 states have call predecessors, (54), 33 states have return successors, (55), 48 states have call predecessors, (55), 53 states have call successors, (55) [2023-03-31 22:44:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 260 transitions. [2023-03-31 22:44:55,281 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 260 transitions. Word has length 58 [2023-03-31 22:44:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:44:55,282 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 260 transitions. [2023-03-31 22:44:55,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 20 states have internal predecessors, (29), 11 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 22:44:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 260 transitions. [2023-03-31 22:44:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 22:44:55,283 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:44:55,283 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2023-03-31 22:44:55,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 22:44:55,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:44:55,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:44:55,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:44:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1851712633, now seen corresponding path program 1 times [2023-03-31 22:44:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:44:55,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918423184] [2023-03-31 22:44:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:55,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:44:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:44:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:44:55,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:44:55,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918423184] [2023-03-31 22:44:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918423184] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:44:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31498316] [2023-03-31 22:44:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:44:55,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:44:55,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:44:55,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:44:55,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 22:44:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:44:55,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 22:44:55,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:44:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:44:55,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:44:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 22:44:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31498316] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:44:55,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181123053] [2023-03-31 22:44:55,970 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-03-31 22:44:55,970 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:44:55,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:44:55,971 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:44:55,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:44:57,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 133 for LOIs [2023-03-31 22:44:57,815 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 140 for LOIs [2023-03-31 22:44:58,291 INFO L197 IcfgInterpreter]: Interpreting procedure write with input of size 131 for LOIs [2023-03-31 22:44:58,752 INFO L197 IcfgInterpreter]: Interpreting procedure stop_frame with input of size 155 for LOIs [2023-03-31 22:44:58,880 INFO L197 IcfgInterpreter]: Interpreting procedure write_signed16 with input of size 154 for LOIs [2023-03-31 22:44:59,040 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 154 for LOIs [2023-03-31 22:44:59,136 INFO L197 IcfgInterpreter]: Interpreting procedure device_start with input of size 108 for LOIs [2023-03-31 22:44:59,241 INFO L197 IcfgInterpreter]: Interpreting procedure init_tables with input of size 108 for LOIs [2023-03-31 22:45:00,706 INFO L197 IcfgInterpreter]: Interpreting procedure exp with input of size 93 for LOIs [2023-03-31 22:45:00,825 INFO L197 IcfgInterpreter]: Interpreting procedure cos with input of size 103 for LOIs [2023-03-31 22:45:01,206 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 6 for LOIs [2023-03-31 22:45:01,207 INFO L197 IcfgInterpreter]: Interpreting procedure rand with input of size 93 for LOIs [2023-03-31 22:45:01,218 INFO L180 IcfgInterpreter]: Interpretation finished