/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:34:03,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:34:03,217 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:34:03,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:34:03,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:34:03,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:34:03,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:34:03,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:34:03,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:34:03,239 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:34:03,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:34:03,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:34:03,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:34:03,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:34:03,241 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:34:03,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:34:03,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:34:03,242 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:34:03,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:34:03,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:34:03,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:34:03,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:34:03,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:34:03,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:34:03,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:34:03,245 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:34:03,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:34:03,246 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:34:03,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:34:03,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:34:03,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:34:03,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:34:03,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:34:03,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:34:03,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:34:03,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:34:03,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:34:03,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:34:03,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:34:03,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:34:03,249 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:34:03,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:34:03,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:34:03,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:34:03,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:34:03,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:34:03,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:34:03,504 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:34:03,505 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:34:03,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i [2023-12-15 21:34:04,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:34:04,958 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:34:04,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i [2023-12-15 21:34:04,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40dab2c22/c6f27e97ace347979fe025369a4df447/FLAG40041a732 [2023-12-15 21:34:04,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40dab2c22/c6f27e97ace347979fe025369a4df447 [2023-12-15 21:34:04,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:34:04,995 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:34:04,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:34:04,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:34:05,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:34:05,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:05,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a356ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05, skipping insertion in model container [2023-12-15 21:34:05,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:05,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:34:05,177 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i[916,929] [2023-12-15 21:34:05,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:34:05,247 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:34:05,257 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i[916,929] [2023-12-15 21:34:05,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:34:05,312 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:34:05,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05 WrapperNode [2023-12-15 21:34:05,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:34:05,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:34:05,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:34:05,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:34:05,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,397 INFO L138 Inliner]: procedures = 29, calls = 170, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 533 [2023-12-15 21:34:05,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:34:05,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:34:05,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:34:05,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:34:05,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,447 INFO L175 MemorySlicer]: Split 135 memory accesses to 6 slices as follows [2, 16, 32, 28, 21, 36]. 27 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 3, 4, 3, 3, 3]. The 18 writes are split as follows [0, 3, 4, 3, 4, 4]. [2023-12-15 21:34:05,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:34:05,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:34:05,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:34:05,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:34:05,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (1/1) ... [2023-12-15 21:34:05,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:34:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:05,517 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) [2023-12-15 21:34:05,540 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 [2023-12-15 21:34:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:34:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:34:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:34:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:34:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 21:34:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 21:34:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-15 21:34:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-15 21:34:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-15 21:34:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-12-15 21:34:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-12-15 21:34:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-12-15 21:34:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-12-15 21:34:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-15 21:34:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-15 21:34:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-12-15 21:34:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 21:34:05,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-15 21:34:05,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-15 21:34:05,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-15 21:34:05,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-12-15 21:34:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-12-15 21:34:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-12-15 21:34:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-12-15 21:34:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:34:05,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:34:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:34:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:34:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:34:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 21:34:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 21:34:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-15 21:34:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:34:05,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:34:05,737 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:34:05,738 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:34:06,317 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:34:06,352 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:34:06,352 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:34:06,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:34:06 BoogieIcfgContainer [2023-12-15 21:34:06,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:34:06,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:34:06,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:34:06,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:34:06,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:34:04" (1/3) ... [2023-12-15 21:34:06,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f92266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:34:06, skipping insertion in model container [2023-12-15 21:34:06,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:05" (2/3) ... [2023-12-15 21:34:06,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f92266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:34:06, skipping insertion in model container [2023-12-15 21:34:06,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:34:06" (3/3) ... [2023-12-15 21:34:06,359 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-6.i [2023-12-15 21:34:06,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:34:06,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:34:06,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:34:06,423 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;@65cf4bde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:34:06,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:34:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 94 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 21:34:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-15 21:34:06,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:06,446 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:34:06,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:06,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:06,453 INFO L85 PathProgramCache]: Analyzing trace with hash -455682870, now seen corresponding path program 1 times [2023-12-15 21:34:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:06,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491235809] [2023-12-15 21:34:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:06,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:06,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491235809] [2023-12-15 21:34:06,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:34:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645561121] [2023-12-15 21:34:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:06,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:06,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:06,789 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) [2023-12-15 21:34:06,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:34:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:07,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:34:07,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-12-15 21:34:07,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:07,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645561121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:07,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:07,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:34:07,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101178123] [2023-12-15 21:34:07,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:34:07,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:07,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:34:07,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:34:07,192 INFO L87 Difference]: Start difference. First operand has 115 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 94 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-15 21:34:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:07,250 INFO L93 Difference]: Finished difference Result 227 states and 361 transitions. [2023-12-15 21:34:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:34:07,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2023-12-15 21:34:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:07,258 INFO L225 Difference]: With dead ends: 227 [2023-12-15 21:34:07,258 INFO L226 Difference]: Without dead ends: 113 [2023-12-15 21:34:07,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:34:07,263 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:07,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:34:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-15 21:34:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-12-15 21:34:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 21:34:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 167 transitions. [2023-12-15 21:34:07,345 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 167 transitions. Word has length 153 [2023-12-15 21:34:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:07,345 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 167 transitions. [2023-12-15 21:34:07,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-15 21:34:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 167 transitions. [2023-12-15 21:34:07,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-15 21:34:07,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:07,349 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:34:07,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:34:07,556 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 [2023-12-15 21:34:07,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:07,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1843939048, now seen corresponding path program 1 times [2023-12-15 21:34:07,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:07,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003117183] [2023-12-15 21:34:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:07,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:07,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003117183] [2023-12-15 21:34:07,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:34:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942073154] [2023-12-15 21:34:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:07,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:07,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:07,673 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) [2023-12-15 21:34:07,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:34:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:07,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:34:07,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-15 21:34:08,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942073154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:08,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:08,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:34:08,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122231250] [2023-12-15 21:34:08,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:08,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:34:08,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:34:08,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:34:08,010 INFO L87 Difference]: Start difference. First operand 113 states and 167 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-15 21:34:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:08,073 INFO L93 Difference]: Finished difference Result 231 states and 342 transitions. [2023-12-15 21:34:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:34:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2023-12-15 21:34:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:08,075 INFO L225 Difference]: With dead ends: 231 [2023-12-15 21:34:08,075 INFO L226 Difference]: Without dead ends: 119 [2023-12-15 21:34:08,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:34:08,077 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 10 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:08,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 481 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:34:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-15 21:34:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2023-12-15 21:34:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 94 states have internal predecessors, (131), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 21:34:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 169 transitions. [2023-12-15 21:34:08,091 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 169 transitions. Word has length 153 [2023-12-15 21:34:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:08,091 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 169 transitions. [2023-12-15 21:34:08,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-15 21:34:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 169 transitions. [2023-12-15 21:34:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-15 21:34:08,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:08,094 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:34:08,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:34:08,301 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 [2023-12-15 21:34:08,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:08,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1412443674, now seen corresponding path program 1 times [2023-12-15 21:34:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:08,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942334788] [2023-12-15 21:34:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:08,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:08,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635454365] [2023-12-15 21:34:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:08,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:08,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:08,386 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) [2023-12-15 21:34:08,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:34:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:08,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:34:08,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-15 21:34:08,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:08,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942334788] [2023-12-15 21:34:08,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635454365] [2023-12-15 21:34:08,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635454365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:08,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:08,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:34:08,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400808055] [2023-12-15 21:34:08,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:08,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:34:08,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:08,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:34:08,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:34:08,658 INFO L87 Difference]: Start difference. First operand 115 states and 169 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:08,701 INFO L93 Difference]: Finished difference Result 252 states and 371 transitions. [2023-12-15 21:34:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:34:08,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2023-12-15 21:34:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:08,707 INFO L225 Difference]: With dead ends: 252 [2023-12-15 21:34:08,707 INFO L226 Difference]: Without dead ends: 138 [2023-12-15 21:34:08,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:34:08,713 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 43 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:08,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 472 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:34:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-15 21:34:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2023-12-15 21:34:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.3854166666666667) internal successors, (133), 96 states have internal predecessors, (133), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 21:34:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2023-12-15 21:34:08,730 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 153 [2023-12-15 21:34:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:08,731 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2023-12-15 21:34:08,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2023-12-15 21:34:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 21:34:08,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:08,734 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:34:08,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:34:08,944 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 [2023-12-15 21:34:08,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:08,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash -366889484, now seen corresponding path program 1 times [2023-12-15 21:34:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531921193] [2023-12-15 21:34:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:09,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:09,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680051198] [2023-12-15 21:34:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:09,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:09,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:09,041 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) [2023-12-15 21:34:09,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:34:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:09,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:34:09,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:09,313 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 15 treesize of output 7 [2023-12-15 21:34:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-15 21:34:09,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:09,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:09,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531921193] [2023-12-15 21:34:09,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:09,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680051198] [2023-12-15 21:34:09,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680051198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:09,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:09,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:34:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740176641] [2023-12-15 21:34:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:09,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:34:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:09,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:34:09,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:34:09,323 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:09,349 INFO L93 Difference]: Finished difference Result 233 states and 341 transitions. [2023-12-15 21:34:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:34:09,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2023-12-15 21:34:09,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:09,353 INFO L225 Difference]: With dead ends: 233 [2023-12-15 21:34:09,353 INFO L226 Difference]: Without dead ends: 117 [2023-12-15 21:34:09,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:34:09,359 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 317 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:34:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-15 21:34:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-12-15 21:34:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.375) internal successors, (132), 96 states have internal predecessors, (132), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 21:34:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2023-12-15 21:34:09,370 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 155 [2023-12-15 21:34:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:09,371 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2023-12-15 21:34:09,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2023-12-15 21:34:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 21:34:09,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:09,373 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:34:09,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:34:09,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:09,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:09,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1184537934, now seen corresponding path program 1 times [2023-12-15 21:34:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:09,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459292125] [2023-12-15 21:34:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:09,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425016986] [2023-12-15 21:34:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:09,631 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:34:09,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:34:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:09,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:34:09,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:09,880 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 15 treesize of output 7 [2023-12-15 21:34:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-15 21:34:09,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:09,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:09,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459292125] [2023-12-15 21:34:09,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:09,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425016986] [2023-12-15 21:34:09,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425016986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:09,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:09,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:34:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10510356] [2023-12-15 21:34:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:09,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:34:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:09,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:34:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:34:09,889 INFO L87 Difference]: Start difference. First operand 117 states and 170 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:09,911 INFO L93 Difference]: Finished difference Result 233 states and 339 transitions. [2023-12-15 21:34:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:34:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2023-12-15 21:34:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:09,914 INFO L225 Difference]: With dead ends: 233 [2023-12-15 21:34:09,915 INFO L226 Difference]: Without dead ends: 117 [2023-12-15 21:34:09,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:34:09,916 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 40 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:09,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 280 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:34:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-15 21:34:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-12-15 21:34:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 96 states have internal predecessors, (131), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 21:34:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 169 transitions. [2023-12-15 21:34:09,939 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 169 transitions. Word has length 155 [2023-12-15 21:34:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:09,939 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 169 transitions. [2023-12-15 21:34:09,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 169 transitions. [2023-12-15 21:34:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 21:34:09,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:09,941 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:34:09,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:34:10,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:10,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:10,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2089361008, now seen corresponding path program 1 times [2023-12-15 21:34:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:10,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863440318] [2023-12-15 21:34:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:10,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:10,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372420708] [2023-12-15 21:34:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:10,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:10,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:34:10,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:34:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:10,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-15 21:34:10,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:10,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:10,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-12-15 21:34:11,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:11,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:34:11,136 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 52 treesize of output 28 [2023-12-15 21:34:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-15 21:34:11,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863440318] [2023-12-15 21:34:11,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:11,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372420708] [2023-12-15 21:34:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372420708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:11,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:11,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:34:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679180694] [2023-12-15 21:34:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:11,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:34:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:34:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:34:11,163 INFO L87 Difference]: Start difference. First operand 117 states and 169 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:11,656 INFO L93 Difference]: Finished difference Result 392 states and 566 transitions. [2023-12-15 21:34:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:34:11,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 155 [2023-12-15 21:34:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:11,658 INFO L225 Difference]: With dead ends: 392 [2023-12-15 21:34:11,658 INFO L226 Difference]: Without dead ends: 276 [2023-12-15 21:34:11,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:34:11,660 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 415 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:11,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1326 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:34:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-15 21:34:11,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 219. [2023-12-15 21:34:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 183 states have (on average 1.360655737704918) internal successors, (249), 184 states have internal predecessors, (249), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 21:34:11,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 315 transitions. [2023-12-15 21:34:11,675 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 315 transitions. Word has length 155 [2023-12-15 21:34:11,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:11,675 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 315 transitions. [2023-12-15 21:34:11,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:11,676 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 315 transitions. [2023-12-15 21:34:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 21:34:11,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:11,677 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:34:11,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:34:11,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:11,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:11,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash -302267351, now seen corresponding path program 1 times [2023-12-15 21:34:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:11,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215335458] [2023-12-15 21:34:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:11,917 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:11,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521173062] [2023-12-15 21:34:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:11,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:11,919 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:34:11,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:34:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:12,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 21:34:12,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:12,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:34:12,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:34:13,000 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 99 treesize of output 75 [2023-12-15 21:34:13,051 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 74 treesize of output 54 [2023-12-15 21:34:13,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-12-15 21:34:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-15 21:34:13,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:34:13,586 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 173 treesize of output 141 [2023-12-15 21:34:18,238 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int#3| c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var2_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var2_Pointer~0.offset))) (let ((.cse0 (< 0 (+ .cse2 1))) (.cse5 (< |c_ULTIMATE.start_step_#t~ite34#1| 0)) (.cse3 (+ (mod (select (select |c_#memory_int#4| c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) 1)) (.cse1 (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296)) (.cse10 (< .cse2 0))) (and (or .cse0 (and (forall ((v_z_3 Int)) (or (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (< (mod (+ (div .cse2 v_z_3) 1) 4294967296) .cse3) (< v_z_3 0) (not (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 0)) (= (mod .cse2 v_z_3) 0))) (forall ((v_z_3 Int)) (let ((.cse4 (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3))) (or (< 65535 v_z_3) (< .cse1 (mod .cse4 4294967296)) (< .cse1 (mod (+ .cse4 1) 4294967296)) (< (mod (+ (div .cse2 v_z_3) 1) 4294967296) .cse3) (< v_z_3 0) (= (mod .cse2 v_z_3) 0)))) (or (forall ((v_z_3 Int)) (or (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (< (mod (+ (div .cse2 v_z_3) 1) 4294967296) .cse3) (< v_z_3 0) (= (mod .cse2 v_z_3) 0))) .cse5))) (forall ((v_z_3 Int)) (let ((.cse7 (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3)) (.cse6 (div .cse2 v_z_3))) (or (< (mod .cse6 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod .cse7 4294967296)) (< .cse1 (mod (+ .cse7 1) 4294967296)) (< (mod (+ .cse6 1) 4294967296) .cse3) (< v_z_3 0)))) (forall ((v_z_3 Int)) (let ((.cse8 (div .cse2 v_z_3))) (or (< (mod .cse8 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (< (mod (+ .cse8 1) 4294967296) .cse3) (< v_z_3 0) (not (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 0))))) (or (and (forall ((v_z_1 Int)) (let ((.cse9 (div .cse2 v_z_1))) (or (< (mod (+ .cse9 1) 4294967296) .cse3) (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 0) (< v_z_1 0) (< 65535 v_z_1) (< (mod .cse9 4294967296) .cse3) (< .cse1 (mod (+ (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 1) 4294967296))))) (or (forall ((v_z_1 Int)) (or (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 0) (< v_z_1 0) (< 65535 v_z_1) (< (mod (div .cse2 v_z_1) 4294967296) .cse3) (< .cse1 (mod (+ (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 1) 4294967296)))) .cse10) (or .cse0 (forall ((v_z_1 Int)) (or (= (mod .cse2 v_z_1) 0) (< (mod (+ (div .cse2 v_z_1) 1) 4294967296) .cse3) (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 0) (< v_z_1 0) (< 65535 v_z_1) (< .cse1 (mod (+ (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 1) 4294967296))))) (forall ((v_z_1 Int)) (or (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 0) (< v_z_1 0) (< 65535 v_z_1) (< (mod (div .cse2 v_z_1) 4294967296) .cse3) (< .cse1 (mod (+ (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_1) 1) 4294967296)) (not (= (mod .cse2 v_z_1) 0))))) (< 0 (+ |c_ULTIMATE.start_step_#t~ite34#1| 1))) (or (forall ((v_z_3 Int)) (or (< (mod (div .cse2 v_z_3) 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (not (= (mod .cse2 v_z_3) 0)) (< v_z_3 0))) .cse5) (forall ((v_z_3 Int)) (or (< (mod (div .cse2 v_z_3) 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (not (= (mod .cse2 v_z_3) 0)) (< v_z_3 0) (not (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 0)))) (or (forall ((v_z_3 Int)) (let ((.cse11 (div .cse2 v_z_3))) (or (< (mod .cse11 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (< (mod (+ .cse11 1) 4294967296) .cse3) (< v_z_3 0)))) .cse5) (forall ((v_z_3 Int)) (let ((.cse12 (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3))) (or (< (mod (div .cse2 v_z_3) 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod .cse12 4294967296)) (not (= (mod .cse2 v_z_3) 0)) (< .cse1 (mod (+ .cse12 1) 4294967296)) (< v_z_3 0)))) (or (and (forall ((v_z_3 Int)) (or (< (mod (div .cse2 v_z_3) 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (< v_z_3 0) (not (= (mod |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 0)))) (forall ((v_z_3 Int)) (let ((.cse13 (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3))) (or (< (mod (div .cse2 v_z_3) 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod .cse13 4294967296)) (< .cse1 (mod (+ .cse13 1) 4294967296)) (< v_z_3 0)))) (or .cse5 (forall ((v_z_3 Int)) (or (< (mod (div .cse2 v_z_3) 4294967296) .cse3) (< 65535 v_z_3) (< .cse1 (mod (div |c_ULTIMATE.start_step_#t~ite34#1| v_z_3) 4294967296)) (< v_z_3 0))))) .cse10)))) is different from true [2023-12-15 21:34:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-15 21:34:28,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:28,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215335458] [2023-12-15 21:34:28,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:28,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521173062] [2023-12-15 21:34:28,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521173062] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:34:28,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:34:28,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-12-15 21:34:28,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280459931] [2023-12-15 21:34:28,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:28,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:34:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:34:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=165, Unknown=3, NotChecked=26, Total=240 [2023-12-15 21:34:28,582 INFO L87 Difference]: Start difference. First operand 219 states and 315 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-15 21:34:33,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-15 21:34:37,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-15 21:35:12,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] Received shutdown request... [2023-12-15 21:35:16,619 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:35:16,642 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 [2023-12-15 21:35:16,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-12-15 21:35:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:35:16,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=51, Invalid=184, Unknown=9, NotChecked=28, Total=272 [2023-12-15 21:35:16,996 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 2 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:35:16,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 592 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 114 Unchecked, 17.4s Time] [2023-12-15 21:35:16,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:35:17,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:35:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:35:17,199 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (219states) and FLOYD_HOARE automaton (currently 4 states, 8 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 17 known predicates. [2023-12-15 21:35:17,202 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:35:17,203 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:35:17,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:35:17 BoogieIcfgContainer [2023-12-15 21:35:17,205 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:35:17,205 INFO L158 Benchmark]: Toolchain (without parser) took 72210.37ms. Allocated memory was 182.5MB in the beginning and 316.7MB in the end (delta: 134.2MB). Free memory was 135.2MB in the beginning and 242.3MB in the end (delta: -107.1MB). Peak memory consumption was 27.5MB. Max. memory is 8.0GB. [2023-12-15 21:35:17,205 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:35:17,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.22ms. Allocated memory is still 182.5MB. Free memory was 135.2MB in the beginning and 119.1MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:35:17,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.06ms. Allocated memory is still 182.5MB. Free memory was 119.1MB in the beginning and 114.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 21:35:17,206 INFO L158 Benchmark]: Boogie Preprocessor took 88.83ms. Allocated memory is still 182.5MB. Free memory was 114.9MB in the beginning and 109.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:35:17,206 INFO L158 Benchmark]: RCFGBuilder took 864.00ms. Allocated memory is still 182.5MB. Free memory was 109.7MB in the beginning and 132.9MB in the end (delta: -23.2MB). Peak memory consumption was 26.3MB. Max. memory is 8.0GB. [2023-12-15 21:35:17,206 INFO L158 Benchmark]: TraceAbstraction took 70850.42ms. Allocated memory was 182.5MB in the beginning and 316.7MB in the end (delta: 134.2MB). Free memory was 131.8MB in the beginning and 242.3MB in the end (delta: -110.5MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. [2023-12-15 21:35:17,208 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 182.5MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 316.22ms. Allocated memory is still 182.5MB. Free memory was 135.2MB in the beginning and 119.1MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 84.06ms. Allocated memory is still 182.5MB. Free memory was 119.1MB in the beginning and 114.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 88.83ms. Allocated memory is still 182.5MB. Free memory was 114.9MB in the beginning and 109.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 864.00ms. Allocated memory is still 182.5MB. Free memory was 109.7MB in the beginning and 132.9MB in the end (delta: -23.2MB). Peak memory consumption was 26.3MB. Max. memory is 8.0GB. * TraceAbstraction took 70850.42ms. Allocated memory was 182.5MB in the beginning and 316.7MB in the end (delta: 134.2MB). Free memory was 131.8MB in the beginning and 242.3MB in the end (delta: -110.5MB). Peak memory consumption was 23.2MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (219states) and FLOYD_HOARE automaton (currently 4 states, 8 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.8s, OverallIterations: 7, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 49.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 512 mSDsluCounter, 3631 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 114 IncrementalHoareTripleChecker+Unchecked, 2485 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 529 IncrementalHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1146 mSDtfsCounter, 529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1239 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 45.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=6, InterpolantAutomatonStates: 34, 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, 6 MinimizatonAttempts, 82 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 1385 NumberOfCodeBlocks, 1385 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1226 ConstructedInterpolants, 2 QuantifiedInterpolants, 7018 SizeOfPredicates, 43 NumberOfNonLiveVariables, 4081 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 5112/5472 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