/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:29:45,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:29:45,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:29:45,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:29:45,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:29:45,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:29:45,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:29:45,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:29:45,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:29:45,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:29:45,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:29:45,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:29:45,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:29:45,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:29:45,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:29:45,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:29:45,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:29:45,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:29:45,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:29:45,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:29:45,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:29:45,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:29:45,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:29:45,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:29:45,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:29:45,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:29:45,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:29:45,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:29:45,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:29:45,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:29:45,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:29:45,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:29:45,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:29:45,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:29:45,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:29:45,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:29:45,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:29:45,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:29:45,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:29:45,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:29:45,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:29:45,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:29:45,948 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:29:45,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:29:45,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:29:45,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:29:45,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:29:45,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:29:45,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:29:45,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:29:45,951 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:29:45,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:29:45,952 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:29:45,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:29:45,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:29:45,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:29:45,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:29:45,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:29:45,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:29:45,953 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:29:45,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:29:45,953 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:29:45,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:29:45,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:29:45,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:29:45,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:29:45,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:29:45,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:29:45,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:29:45,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:29:45,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:29:45,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:29:45,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:29:45,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:29:45,955 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:29:45,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:29:45,955 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:29:45,955 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:29:46,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:29:46,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:29:46,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:29:46,195 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:29:46,196 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:29:46,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:29:47,358 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:29:47,576 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:29:47,576 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:29:47,592 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679c92b67/5028cefc7255431d9cc1b9bde027902b/FLAG0ba457f37 [2023-03-31 01:29:47,604 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/679c92b67/5028cefc7255431d9cc1b9bde027902b [2023-03-31 01:29:47,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:29:47,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:29:47,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:29:47,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:29:47,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:29:47,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:29:47" (1/1) ... [2023-03-31 01:29:47,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b826002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:47, skipping insertion in model container [2023-03-31 01:29:47,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:29:47" (1/1) ... [2023-03-31 01:29:47,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:29:47,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:29:47,945 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c[28366,28379] [2023-03-31 01:29:47,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:29:47,969 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:29:48,028 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.UNBOUNDED.pals.c[28366,28379] [2023-03-31 01:29:48,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:29:48,043 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:29:48,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48 WrapperNode [2023-03-31 01:29:48,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:29:48,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:29:48,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:29:48,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:29:48,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:29:48,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:29:48,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:29:48,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:29:48,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (1/1) ... [2023-03-31 01:29:48,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:29:48,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:29:48,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:29:48,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:29:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:29:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:29:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:29:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:29:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:29:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:29:48,219 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:29:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-03-31 01:29:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:29:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:29:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:29:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:29:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:29:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:29:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:29:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:29:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:29:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:29:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:29:48,334 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:29:48,336 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:29:49,322 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:29:49,337 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:29:49,337 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:29:49,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:29:49 BoogieIcfgContainer [2023-03-31 01:29:49,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:29:49,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:29:49,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:29:49,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:29:49,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:29:47" (1/3) ... [2023-03-31 01:29:49,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618117ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:29:49, skipping insertion in model container [2023-03-31 01:29:49,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:48" (2/3) ... [2023-03-31 01:29:49,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618117ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:29:49, skipping insertion in model container [2023-03-31 01:29:49,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:29:49" (3/3) ... [2023-03-31 01:29:49,358 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:29:49,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:29:49,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:29:49,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:29:49,449 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27809b50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:29:49,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:29:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 317 states, 295 states have (on average 1.8) internal successors, (531), 297 states have internal predecessors, (531), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 01:29:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:29:49,475 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:49,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:49,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:49,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1254193429, now seen corresponding path program 1 times [2023-03-31 01:29:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:49,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072708682] [2023-03-31 01:29:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:29:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:29:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:29:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:29:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:29:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:29:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072708682] [2023-03-31 01:29:50,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072708682] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:50,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:50,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:29:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237554693] [2023-03-31 01:29:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:50,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:29:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:29:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:29:50,593 INFO L87 Difference]: Start difference. First operand has 317 states, 295 states have (on average 1.8) internal successors, (531), 297 states have internal predecessors, (531), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:29:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:52,891 INFO L93 Difference]: Finished difference Result 444 states and 759 transitions. [2023-03-31 01:29:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:29:52,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2023-03-31 01:29:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:52,904 INFO L225 Difference]: With dead ends: 444 [2023-03-31 01:29:52,904 INFO L226 Difference]: Without dead ends: 328 [2023-03-31 01:29:52,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:29:52,911 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1162 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:52,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 46 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:29:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-03-31 01:29:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 312. [2023-03-31 01:29:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 292 states have (on average 1.7945205479452055) internal successors, (524), 293 states have internal predecessors, (524), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:29:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 543 transitions. [2023-03-31 01:29:53,023 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 543 transitions. Word has length 104 [2023-03-31 01:29:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:53,023 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 543 transitions. [2023-03-31 01:29:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:29:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 543 transitions. [2023-03-31 01:29:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:29:53,027 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:53,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:53,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:29:53,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:53,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:53,029 INFO L85 PathProgramCache]: Analyzing trace with hash -830546707, now seen corresponding path program 1 times [2023-03-31 01:29:53,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:53,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410657341] [2023-03-31 01:29:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:53,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:29:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:29:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:29:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:29:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:29:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:29:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:53,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:53,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410657341] [2023-03-31 01:29:53,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410657341] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:53,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:53,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:29:53,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158072566] [2023-03-31 01:29:53,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:53,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:29:53,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:53,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:29:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:29:53,879 INFO L87 Difference]: Start difference. First operand 312 states and 543 transitions. Second operand has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:58,112 INFO L93 Difference]: Finished difference Result 442 states and 751 transitions. [2023-03-31 01:29:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:29:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 104 [2023-03-31 01:29:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:58,116 INFO L225 Difference]: With dead ends: 442 [2023-03-31 01:29:58,116 INFO L226 Difference]: Without dead ends: 328 [2023-03-31 01:29:58,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:29:58,118 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1589 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 3979 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 4051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:58,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 132 Invalid, 4051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3979 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 01:29:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-03-31 01:29:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 312. [2023-03-31 01:29:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 292 states have (on average 1.6506849315068493) internal successors, (482), 293 states have internal predecessors, (482), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:29:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 501 transitions. [2023-03-31 01:29:58,180 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 501 transitions. Word has length 104 [2023-03-31 01:29:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:58,180 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 501 transitions. [2023-03-31 01:29:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 501 transitions. [2023-03-31 01:29:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-03-31 01:29:58,184 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:58,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:58,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:29:58,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:58,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1981225145, now seen corresponding path program 1 times [2023-03-31 01:29:58,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:58,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890204578] [2023-03-31 01:29:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:29:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 01:29:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:29:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890204578] [2023-03-31 01:29:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890204578] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:59,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:59,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:29:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467009537] [2023-03-31 01:29:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:59,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:29:59,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:29:59,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:29:59,312 INFO L87 Difference]: Start difference. First operand 312 states and 501 transitions. Second operand has 16 states, 16 states have (on average 7.9375) internal successors, (127), 11 states have internal predecessors, (127), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:12,342 INFO L93 Difference]: Finished difference Result 1785 states and 2907 transitions. [2023-03-31 01:30:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-03-31 01:30:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 11 states have internal predecessors, (127), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 145 [2023-03-31 01:30:12,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:12,357 INFO L225 Difference]: With dead ends: 1785 [2023-03-31 01:30:12,357 INFO L226 Difference]: Without dead ends: 1677 [2023-03-31 01:30:12,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2975 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-03-31 01:30:12,372 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8231 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 5136 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8242 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 5520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 5136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:12,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8242 Valid, 161 Invalid, 5520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 5136 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-03-31 01:30:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2023-03-31 01:30:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 842. [2023-03-31 01:30:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 754 states have (on average 1.676392572944297) internal successors, (1264), 763 states have internal predecessors, (1264), 40 states have call successors, (40), 40 states have call predecessors, (40), 47 states have return successors, (67), 39 states have call predecessors, (67), 39 states have call successors, (67) [2023-03-31 01:30:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1371 transitions. [2023-03-31 01:30:12,562 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1371 transitions. Word has length 145 [2023-03-31 01:30:12,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:12,564 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1371 transitions. [2023-03-31 01:30:12,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 11 states have internal predecessors, (127), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1371 transitions. [2023-03-31 01:30:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-03-31 01:30:12,567 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:12,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:12,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:30:12,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:12,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:12,569 INFO L85 PathProgramCache]: Analyzing trace with hash -766073659, now seen corresponding path program 1 times [2023-03-31 01:30:12,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:12,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195836331] [2023-03-31 01:30:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:12,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:30:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:30:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:30:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 01:30:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:30:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:30:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195836331] [2023-03-31 01:30:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195836331] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:13,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:13,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:30:13,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725239090] [2023-03-31 01:30:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:13,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:30:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:30:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:30:13,324 INFO L87 Difference]: Start difference. First operand 842 states and 1371 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 6 states have internal predecessors, (128), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:20,019 INFO L93 Difference]: Finished difference Result 2653 states and 4300 transitions. [2023-03-31 01:30:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 01:30:20,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 6 states have internal predecessors, (128), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 146 [2023-03-31 01:30:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:20,029 INFO L225 Difference]: With dead ends: 2653 [2023-03-31 01:30:20,029 INFO L226 Difference]: Without dead ends: 2015 [2023-03-31 01:30:20,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 01:30:20,032 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2026 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3816 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:20,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 118 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3816 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-03-31 01:30:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-03-31 01:30:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1761. [2023-03-31 01:30:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1548 states have (on average 1.6724806201550388) internal successors, (2589), 1574 states have internal predecessors, (2589), 94 states have call successors, (94), 94 states have call predecessors, (94), 118 states have return successors, (180), 93 states have call predecessors, (180), 93 states have call successors, (180) [2023-03-31 01:30:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2863 transitions. [2023-03-31 01:30:20,279 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2863 transitions. Word has length 146 [2023-03-31 01:30:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:20,280 INFO L495 AbstractCegarLoop]: Abstraction has 1761 states and 2863 transitions. [2023-03-31 01:30:20,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 6 states have internal predecessors, (128), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2863 transitions. [2023-03-31 01:30:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-03-31 01:30:20,282 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:20,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:20,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:30:20,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:20,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1802768194, now seen corresponding path program 1 times [2023-03-31 01:30:20,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:20,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11679086] [2023-03-31 01:30:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:30:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:30:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:30:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 01:30:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:30:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:30:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:20,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11679086] [2023-03-31 01:30:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11679086] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:20,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:20,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:30:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203624835] [2023-03-31 01:30:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:20,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:30:20,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:30:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:30:21,000 INFO L87 Difference]: Start difference. First operand 1761 states and 2863 transitions. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 6 states have internal predecessors, (129), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:27,548 INFO L93 Difference]: Finished difference Result 10671 states and 17259 transitions. [2023-03-31 01:30:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 01:30:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 6 states have internal predecessors, (129), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 147 [2023-03-31 01:30:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:27,588 INFO L225 Difference]: With dead ends: 10671 [2023-03-31 01:30:27,588 INFO L226 Difference]: Without dead ends: 9114 [2023-03-31 01:30:27,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 01:30:27,596 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2060 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:27,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 118 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-31 01:30:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9114 states. [2023-03-31 01:30:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9114 to 7876. [2023-03-31 01:30:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 6828 states have (on average 1.6682776801405976) internal successors, (11391), 6969 states have internal predecessors, (11391), 454 states have call successors, (454), 454 states have call predecessors, (454), 593 states have return successors, (969), 453 states have call predecessors, (969), 453 states have call successors, (969) [2023-03-31 01:30:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 12814 transitions. [2023-03-31 01:30:28,651 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 12814 transitions. Word has length 147 [2023-03-31 01:30:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:28,652 INFO L495 AbstractCegarLoop]: Abstraction has 7876 states and 12814 transitions. [2023-03-31 01:30:28,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 6 states have internal predecessors, (129), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 12814 transitions. [2023-03-31 01:30:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 01:30:28,654 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:28,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:28,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:30:28,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:28,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash 367754652, now seen corresponding path program 1 times [2023-03-31 01:30:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217784748] [2023-03-31 01:30:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:30:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:30:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:30:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 01:30:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:30:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:30:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:29,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:29,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217784748] [2023-03-31 01:30:29,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217784748] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:29,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:29,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:30:29,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822473036] [2023-03-31 01:30:29,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:30:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:30:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:30:29,396 INFO L87 Difference]: Start difference. First operand 7876 states and 12814 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 6 states have internal predecessors, (130), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:38,094 INFO L93 Difference]: Finished difference Result 52137 states and 84249 transitions. [2023-03-31 01:30:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 01:30:38,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 6 states have internal predecessors, (130), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 148 [2023-03-31 01:30:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:38,291 INFO L225 Difference]: With dead ends: 52137 [2023-03-31 01:30:38,291 INFO L226 Difference]: Without dead ends: 44465 [2023-03-31 01:30:38,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 01:30:38,326 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 3650 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3660 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:38,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3660 Valid, 125 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3420 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 01:30:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44465 states.