/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_lcr.7.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:33:42,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:33:42,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:33:42,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:33:42,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:33:42,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:33:42,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:33:42,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:33:42,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:33:42,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:33:42,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:33:42,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:33:42,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:33:42,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:33:42,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:33:42,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:33:42,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:33:42,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:33:42,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:33:42,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:33:42,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:33:42,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:33:42,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:33:42,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:33:42,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:33:42,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:33:42,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:33:42,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:33:42,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:33:42,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:33:42,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:33:42,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:33:42,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:33:42,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:33:42,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:33:42,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:33:42,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:33:42,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:33:42,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:33:42,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:33:42,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:33:42,988 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 01:33:43,006 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:33:43,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:33:43,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:33:43,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:33:43,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:33:43,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:33:43,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:33:43,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:33:43,008 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:33:43,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:33:43,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:33:43,010 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:33:43,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:33:43,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:33:43,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:33:43,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:33:43,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:33:43,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:33:43,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:33:43,011 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:33:43,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:33:43,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:33:43,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:33:43,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:33:43,241 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:33:43,243 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:33:43,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2023-03-31 01:33:44,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:33:44,597 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:33:44,597 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2023-03-31 01:33:44,612 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599e0530e/7a4e9a8641d241cba769dbae67a8545b/FLAGdb80fad25 [2023-03-31 01:33:44,627 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/599e0530e/7a4e9a8641d241cba769dbae67a8545b [2023-03-31 01:33:44,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:33:44,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:33:44,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:33:44,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:33:44,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:33:44,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:33:44" (1/1) ... [2023-03-31 01:33:44,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3518ec17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:44, skipping insertion in model container [2023-03-31 01:33:44,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:33:44" (1/1) ... [2023-03-31 01:33:44,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:33:44,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:33:44,946 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_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2023-03-31 01:33:44,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:33:44,963 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:33:45,050 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_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2023-03-31 01:33:45,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:33:45,068 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:33:45,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45 WrapperNode [2023-03-31 01:33:45,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:33:45,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:33:45,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:33:45,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:33:45,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:33:45,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:33:45,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:33:45,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:33:45,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (1/1) ... [2023-03-31 01:33:45,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:33:45,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:33:45,168 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 01:33:45,170 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 01:33:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:33:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:33:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:33:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:33:45,197 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure node7 [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:33:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-03-31 01:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:33:45,293 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:33:45,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:33:45,925 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:33:45,932 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:33:45,932 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:33:45,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:33:45 BoogieIcfgContainer [2023-03-31 01:33:45,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:33:45,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:33:45,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:33:45,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:33:45,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:33:44" (1/3) ... [2023-03-31 01:33:45,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44edac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:33:45, skipping insertion in model container [2023-03-31 01:33:45,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:33:45" (2/3) ... [2023-03-31 01:33:45,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e44edac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:33:45, skipping insertion in model container [2023-03-31 01:33:45,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:33:45" (3/3) ... [2023-03-31 01:33:45,948 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2023-03-31 01:33:45,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:33:45,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:33:46,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:33:46,023 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;@6dc5ae7c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:33:46,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:33:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 130 states have (on average 1.6846153846153846) internal successors, (219), 132 states have internal predecessors, (219), 13 states have call successors, (13), 13 states have call predecessors, (13), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 01:33:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:33:46,037 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:46,038 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] [2023-03-31 01:33:46,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:46,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash 180508577, now seen corresponding path program 1 times [2023-03-31 01:33:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241920135] [2023-03-31 01:33:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-03-31 01:33:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-31 01:33:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-03-31 01:33:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:33:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-03-31 01:33:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:33:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:33:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:33:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-03-31 01:33:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:46,797 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 01:33:46,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241920135] [2023-03-31 01:33:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241920135] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:46,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:33:46,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:33:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885014403] [2023-03-31 01:33:46,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:46,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:33:46,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:46,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:33:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:33:46,839 INFO L87 Difference]: Start difference. First operand has 158 states, 130 states have (on average 1.6846153846153846) internal successors, (219), 132 states have internal predecessors, (219), 13 states have call successors, (13), 13 states have call predecessors, (13), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-03-31 01:33:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:48,250 INFO L93 Difference]: Finished difference Result 247 states and 372 transitions. [2023-03-31 01:33:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:33:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2023-03-31 01:33:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:48,259 INFO L225 Difference]: With dead ends: 247 [2023-03-31 01:33:48,259 INFO L226 Difference]: Without dead ends: 154 [2023-03-31 01:33:48,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:33:48,265 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 825 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:48,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 67 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:33:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-03-31 01:33:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-03-31 01:33:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 127 states have (on average 1.669291338582677) internal successors, (212), 128 states have internal predecessors, (212), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-03-31 01:33:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 237 transitions. [2023-03-31 01:33:48,323 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 237 transitions. Word has length 67 [2023-03-31 01:33:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:48,324 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 237 transitions. [2023-03-31 01:33:48,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-03-31 01:33:48,324 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 237 transitions. [2023-03-31 01:33:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:33:48,326 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:48,326 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] [2023-03-31 01:33:48,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:33:48,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:48,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1718848607, now seen corresponding path program 1 times [2023-03-31 01:33:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:48,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625126587] [2023-03-31 01:33:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-03-31 01:33:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-31 01:33:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-03-31 01:33:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:33:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-03-31 01:33:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-03-31 01:33:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-03-31 01:33:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-03-31 01:33:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-03-31 01:33:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:48,931 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 01:33:48,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:48,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625126587] [2023-03-31 01:33:48,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625126587] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:48,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:33:48,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:33:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636872355] [2023-03-31 01:33:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:48,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:33:48,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:33:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:33:48,936 INFO L87 Difference]: Start difference. First operand 153 states and 237 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 10 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:33:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:33:51,289 INFO L93 Difference]: Finished difference Result 245 states and 364 transitions. [2023-03-31 01:33:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:33:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 10 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2023-03-31 01:33:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:33:51,291 INFO L225 Difference]: With dead ends: 245 [2023-03-31 01:33:51,291 INFO L226 Difference]: Without dead ends: 154 [2023-03-31 01:33:51,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:33:51,293 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1243 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:33:51,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 168 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:33:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-03-31 01:33:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-03-31 01:33:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 127 states have (on average 1.2755905511811023) internal successors, (162), 128 states have internal predecessors, (162), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-03-31 01:33:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2023-03-31 01:33:51,321 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 67 [2023-03-31 01:33:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:33:51,321 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2023-03-31 01:33:51,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 10 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:33:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2023-03-31 01:33:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-03-31 01:33:51,324 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:33:51,324 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] [2023-03-31 01:33:51,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:33:51,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:33:51,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:33:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 25252912, now seen corresponding path program 1 times [2023-03-31 01:33:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:33:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985615280] [2023-03-31 01:33:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:33:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:33:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:33:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:33:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:33:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:33:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:33:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:33:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-03-31 01:33:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:33:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-03-31 01:33:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-03-31 01:33:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-03-31 01:33:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:33:52,440 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 01:33:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:33:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985615280] [2023-03-31 01:33:52,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985615280] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:33:52,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:33:52,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-03-31 01:33:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571333664] [2023-03-31 01:33:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:33:52,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-03-31 01:33:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:33:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-03-31 01:33:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:33:52,443 INFO L87 Difference]: Start difference. First operand 153 states and 187 transitions. Second operand has 25 states, 25 states have (on average 3.68) internal successors, (92), 17 states have internal predecessors, (92), 3 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-03-31 01:34:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:34:17,027 INFO L93 Difference]: Finished difference Result 2018 states and 2891 transitions. [2023-03-31 01:34:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2023-03-31 01:34:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 17 states have internal predecessors, (92), 3 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2023-03-31 01:34:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:34:17,039 INFO L225 Difference]: With dead ends: 2018 [2023-03-31 01:34:17,039 INFO L226 Difference]: Without dead ends: 1933 [2023-03-31 01:34:17,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22173 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=7424, Invalid=48982, Unknown=0, NotChecked=0, Total=56406 [2023-03-31 01:34:17,059 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 4522 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 8873 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4539 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 9330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 8873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:34:17,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4539 Valid, 514 Invalid, 9330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 8873 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-03-31 01:34:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2023-03-31 01:34:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 602. [2023-03-31 01:34:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 472 states have (on average 1.4152542372881356) internal successors, (668), 487 states have internal predecessors, (668), 58 states have call successors, (58), 58 states have call predecessors, (58), 71 states have return successors, (103), 57 states have call predecessors, (103), 57 states have call successors, (103) [2023-03-31 01:34:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 829 transitions. [2023-03-31 01:34:17,209 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 829 transitions. Word has length 116 [2023-03-31 01:34:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:34:17,217 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 829 transitions. [2023-03-31 01:34:17,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.68) internal successors, (92), 17 states have internal predecessors, (92), 3 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-03-31 01:34:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 829 transitions. [2023-03-31 01:34:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-03-31 01:34:17,223 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:34:17,223 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] [2023-03-31 01:34:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:34:17,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:34:17,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:34:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash 361625248, now seen corresponding path program 1 times [2023-03-31 01:34:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:34:17,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6144693] [2023-03-31 01:34:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:34:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:34:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:34:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:34:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:34:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:34:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:34:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:34:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-03-31 01:34:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:34:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-03-31 01:34:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-03-31 01:34:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-03-31 01:34:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:17,597 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 01:34:17,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:34:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6144693] [2023-03-31 01:34:17,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6144693] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:34:17,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:34:17,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:34:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47377045] [2023-03-31 01:34:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:34:17,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:34:17,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:34:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:34:17,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:34:17,600 INFO L87 Difference]: Start difference. First operand 602 states and 829 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-03-31 01:34:19,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:34:19,635 INFO L93 Difference]: Finished difference Result 1636 states and 2313 transitions. [2023-03-31 01:34:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-03-31 01:34:19,636 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 118 [2023-03-31 01:34:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:34:19,641 INFO L225 Difference]: With dead ends: 1636 [2023-03-31 01:34:19,641 INFO L226 Difference]: Without dead ends: 1102 [2023-03-31 01:34:19,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:34:19,645 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1194 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:34:19,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 115 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:34:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-03-31 01:34:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1082. [2023-03-31 01:34:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 832 states have (on average 1.4230769230769231) internal successors, (1184), 859 states have internal predecessors, (1184), 112 states have call successors, (112), 112 states have call predecessors, (112), 137 states have return successors, (213), 111 states have call predecessors, (213), 111 states have call successors, (213) [2023-03-31 01:34:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1509 transitions. [2023-03-31 01:34:19,896 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1509 transitions. Word has length 118 [2023-03-31 01:34:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:34:19,897 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1509 transitions. [2023-03-31 01:34:19,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-03-31 01:34:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1509 transitions. [2023-03-31 01:34:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-03-31 01:34:19,899 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:34:19,899 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] [2023-03-31 01:34:19,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:34:19,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:34:19,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:34:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash -926077208, now seen corresponding path program 1 times [2023-03-31 01:34:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:34:19,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254735665] [2023-03-31 01:34:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:34:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:34:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:34:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:34:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:34:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:34:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:34:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:34:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-03-31 01:34:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:34:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-03-31 01:34:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-03-31 01:34:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-03-31 01:34:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:34:20,966 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 01:34:20,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:34:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254735665] [2023-03-31 01:34:20,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254735665] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:34:20,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:34:20,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-03-31 01:34:20,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285980493] [2023-03-31 01:34:20,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:34:20,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-03-31 01:34:20,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:34:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-03-31 01:34:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:34:20,969 INFO L87 Difference]: Start difference. First operand 1082 states and 1509 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 17 states have internal predecessors, (94), 3 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11)