/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-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:57:28,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:57:28,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:57:28,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:57:28,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:57:28,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:57:28,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:57:28,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:57:28,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:57:28,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:57:28,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:57:28,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:57:28,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:57:28,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:57:28,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:57:28,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:57:28,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:57:28,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:57:28,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:57:28,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:57:28,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:57:28,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:57:28,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:57:28,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:57:28,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:57:28,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:57:28,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:57:28,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:57:28,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:57:28,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:57:28,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:57:28,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:57:28,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:57:28,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:57:28,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:57:28,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:57:28,163 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 01:57:28,192 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:57:28,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:57:28,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:57:28,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:57:28,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:57:28,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:57:28,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:57:28,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:57:28,195 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:57:28,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:57:28,196 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:57:28,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:57:28,198 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:57:28,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:57:28,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:57:28,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:57:28,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:57:28,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:57:28,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:57:28,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:57:28,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:57:28,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:57:28,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:57:28,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:57:28,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:57:28,199 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:57:28,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:57:28,200 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:57:28,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:57:28,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:57:28,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:57:28,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:57:28,435 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:57:28,435 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:57:28,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-03-31 01:57:29,640 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:57:29,873 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:57:29,874 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-03-31 01:57:29,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366d7c946/696933a3fede45a8b77257524c25b1d2/FLAGc8425af72 [2023-03-31 01:57:29,897 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366d7c946/696933a3fede45a8b77257524c25b1d2 [2023-03-31 01:57:29,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:57:29,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:57:29,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:57:29,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:57:29,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:57:29,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:57:29" (1/1) ... [2023-03-31 01:57:29,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ded2fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:29, skipping insertion in model container [2023-03-31 01:57:29,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:57:29" (1/1) ... [2023-03-31 01:57:29,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:57:29,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:57:30,131 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-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7633,7646] [2023-03-31 01:57:30,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:57:30,174 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:57:30,238 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-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7633,7646] [2023-03-31 01:57:30,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:57:30,305 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:57:30,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30 WrapperNode [2023-03-31 01:57:30,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:57:30,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:57:30,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:57:30,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:57:30,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:57:30,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:57:30,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:57:30,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:57:30,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (1/1) ... [2023-03-31 01:57:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:57:30,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:57:30,419 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 01:57:30,445 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 01:57:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:57:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:57:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:57:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:57:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:57:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:57:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:57:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:57:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:57:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:57:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 01:57:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:57:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:57:30,625 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:57:30,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:57:31,244 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:57:31,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:57:31,252 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:57:31,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:57:31 BoogieIcfgContainer [2023-03-31 01:57:31,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:57:31,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:57:31,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:57:31,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:57:31,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:57:29" (1/3) ... [2023-03-31 01:57:31,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a90ed7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:57:31, skipping insertion in model container [2023-03-31 01:57:31,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:57:30" (2/3) ... [2023-03-31 01:57:31,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a90ed7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:57:31, skipping insertion in model container [2023-03-31 01:57:31,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:57:31" (3/3) ... [2023-03-31 01:57:31,261 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-03-31 01:57:31,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:57:31,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:57:31,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:57:31,347 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;@74a5364c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:57:31,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:57:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 137 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:57:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-03-31 01:57:31,368 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:31,369 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] [2023-03-31 01:57:31,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:31,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash -691215733, now seen corresponding path program 1 times [2023-03-31 01:57:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:31,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146685260] [2023-03-31 01:57:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:32,250 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 01:57:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146685260] [2023-03-31 01:57:32,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146685260] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:32,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:32,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:32,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149334949] [2023-03-31 01:57:32,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:32,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:32,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:32,310 INFO L87 Difference]: Start difference. First operand has 142 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 137 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:33,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:33,486 INFO L93 Difference]: Finished difference Result 304 states and 491 transitions. [2023-03-31 01:57:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2023-03-31 01:57:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:33,499 INFO L225 Difference]: With dead ends: 304 [2023-03-31 01:57:33,499 INFO L226 Difference]: Without dead ends: 207 [2023-03-31 01:57:33,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:33,505 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 170 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:33,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 485 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:57:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-03-31 01:57:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-03-31 01:57:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.427860696517413) internal successors, (287), 201 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 290 transitions. [2023-03-31 01:57:33,560 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 290 transitions. Word has length 90 [2023-03-31 01:57:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:33,561 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 290 transitions. [2023-03-31 01:57:33,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 290 transitions. [2023-03-31 01:57:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-03-31 01:57:33,564 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:33,564 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] [2023-03-31 01:57:33,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:57:33,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:33,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1653238891, now seen corresponding path program 1 times [2023-03-31 01:57:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:33,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635355650] [2023-03-31 01:57:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:33,924 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 01:57:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:33,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635355650] [2023-03-31 01:57:33,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635355650] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:33,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247230316] [2023-03-31 01:57:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:33,929 INFO L87 Difference]: Start difference. First operand 205 states and 290 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:34,659 INFO L93 Difference]: Finished difference Result 485 states and 730 transitions. [2023-03-31 01:57:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:34,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-03-31 01:57:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:34,662 INFO L225 Difference]: With dead ends: 485 [2023-03-31 01:57:34,663 INFO L226 Difference]: Without dead ends: 337 [2023-03-31 01:57:34,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:34,665 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 112 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:34,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 403 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:57:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-03-31 01:57:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2023-03-31 01:57:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 331 states have (on average 1.4833836858006042) internal successors, (491), 331 states have internal predecessors, (491), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 494 transitions. [2023-03-31 01:57:34,699 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 494 transitions. Word has length 91 [2023-03-31 01:57:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:34,699 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 494 transitions. [2023-03-31 01:57:34,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 494 transitions. [2023-03-31 01:57:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-03-31 01:57:34,701 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:34,701 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] [2023-03-31 01:57:34,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:57:34,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:34,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash -994834493, now seen corresponding path program 1 times [2023-03-31 01:57:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:34,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658409868] [2023-03-31 01:57:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:34,996 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 01:57:34,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658409868] [2023-03-31 01:57:34,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658409868] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:34,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:34,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:34,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86112884] [2023-03-31 01:57:34,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:34,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:34,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:34,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:34,999 INFO L87 Difference]: Start difference. First operand 335 states and 494 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:35,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:35,679 INFO L93 Difference]: Finished difference Result 859 states and 1316 transitions. [2023-03-31 01:57:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:35,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2023-03-31 01:57:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:35,683 INFO L225 Difference]: With dead ends: 859 [2023-03-31 01:57:35,683 INFO L226 Difference]: Without dead ends: 581 [2023-03-31 01:57:35,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:35,685 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 107 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:35,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 399 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-03-31 01:57:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2023-03-31 01:57:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 575 states have (on average 1.5147826086956522) internal successors, (871), 575 states have internal predecessors, (871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 874 transitions. [2023-03-31 01:57:35,746 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 874 transitions. Word has length 92 [2023-03-31 01:57:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:35,748 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 874 transitions. [2023-03-31 01:57:35,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 874 transitions. [2023-03-31 01:57:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-03-31 01:57:35,756 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:35,756 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] [2023-03-31 01:57:35,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:57:35,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:35,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1063947070, now seen corresponding path program 1 times [2023-03-31 01:57:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:35,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787718241] [2023-03-31 01:57:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:35,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:36,059 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 01:57:36,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:36,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787718241] [2023-03-31 01:57:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787718241] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:36,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531406196] [2023-03-31 01:57:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:36,062 INFO L87 Difference]: Start difference. First operand 579 states and 874 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:36,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:36,764 INFO L93 Difference]: Finished difference Result 1559 states and 2404 transitions. [2023-03-31 01:57:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:36,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2023-03-31 01:57:36,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:36,771 INFO L225 Difference]: With dead ends: 1559 [2023-03-31 01:57:36,772 INFO L226 Difference]: Without dead ends: 1037 [2023-03-31 01:57:36,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:36,782 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 102 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:36,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 395 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-03-31 01:57:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1035. [2023-03-31 01:57:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1031 states have (on average 1.527643064985451) internal successors, (1575), 1031 states have internal predecessors, (1575), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1578 transitions. [2023-03-31 01:57:36,892 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1578 transitions. Word has length 93 [2023-03-31 01:57:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:36,892 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1578 transitions. [2023-03-31 01:57:36,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1578 transitions. [2023-03-31 01:57:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-03-31 01:57:36,897 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:36,897 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] [2023-03-31 01:57:36,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:57:36,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:36,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1485155560, now seen corresponding path program 1 times [2023-03-31 01:57:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742899843] [2023-03-31 01:57:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:36,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:37,214 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 01:57:37,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742899843] [2023-03-31 01:57:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742899843] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:37,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:37,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258325865] [2023-03-31 01:57:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:37,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:37,225 INFO L87 Difference]: Start difference. First operand 1035 states and 1578 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:37,985 INFO L93 Difference]: Finished difference Result 2863 states and 4412 transitions. [2023-03-31 01:57:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-03-31 01:57:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:37,993 INFO L225 Difference]: With dead ends: 2863 [2023-03-31 01:57:37,993 INFO L226 Difference]: Without dead ends: 1885 [2023-03-31 01:57:37,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:37,996 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 97 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:37,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 391 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-03-31 01:57:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1883. [2023-03-31 01:57:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1879 states have (on average 1.5279403938265035) internal successors, (2871), 1879 states have internal predecessors, (2871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2874 transitions. [2023-03-31 01:57:38,138 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2874 transitions. Word has length 94 [2023-03-31 01:57:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:38,139 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 2874 transitions. [2023-03-31 01:57:38,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2874 transitions. [2023-03-31 01:57:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-03-31 01:57:38,140 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:38,140 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] [2023-03-31 01:57:38,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:57:38,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:38,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1174120321, now seen corresponding path program 1 times [2023-03-31 01:57:38,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:38,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634053433] [2023-03-31 01:57:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:38,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:38,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:38,419 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 01:57:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634053433] [2023-03-31 01:57:38,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634053433] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:38,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:38,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:38,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289950423] [2023-03-31 01:57:38,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:38,422 INFO L87 Difference]: Start difference. First operand 1883 states and 2874 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:39,234 INFO L93 Difference]: Finished difference Result 5279 states and 8092 transitions. [2023-03-31 01:57:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2023-03-31 01:57:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:39,248 INFO L225 Difference]: With dead ends: 5279 [2023-03-31 01:57:39,248 INFO L226 Difference]: Without dead ends: 3453 [2023-03-31 01:57:39,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:39,252 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 92 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:39,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 387 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2023-03-31 01:57:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3451. [2023-03-31 01:57:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3447 states have (on average 1.5198723527705251) internal successors, (5239), 3447 states have internal predecessors, (5239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5242 transitions. [2023-03-31 01:57:39,526 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5242 transitions. Word has length 95 [2023-03-31 01:57:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:39,526 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 5242 transitions. [2023-03-31 01:57:39,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5242 transitions. [2023-03-31 01:57:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 01:57:39,527 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:39,527 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] [2023-03-31 01:57:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:57:39,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:39,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 516753514, now seen corresponding path program 1 times [2023-03-31 01:57:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:39,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607176134] [2023-03-31 01:57:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:39,771 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 01:57:39,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607176134] [2023-03-31 01:57:39,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607176134] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:39,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:39,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:39,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902491543] [2023-03-31 01:57:39,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:39,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:39,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:39,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:39,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:39,773 INFO L87 Difference]: Start difference. First operand 3451 states and 5242 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:40,839 INFO L93 Difference]: Finished difference Result 9727 states and 14780 transitions. [2023-03-31 01:57:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:40,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-03-31 01:57:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:40,865 INFO L225 Difference]: With dead ends: 9727 [2023-03-31 01:57:40,865 INFO L226 Difference]: Without dead ends: 6333 [2023-03-31 01:57:40,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:40,876 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 87 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:40,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 383 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2023-03-31 01:57:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 6331. [2023-03-31 01:57:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6327 states have (on average 1.5057689268215584) internal successors, (9527), 6327 states have internal predecessors, (9527), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 9530 transitions. [2023-03-31 01:57:41,423 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 9530 transitions. Word has length 96 [2023-03-31 01:57:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:41,423 INFO L495 AbstractCegarLoop]: Abstraction has 6331 states and 9530 transitions. [2023-03-31 01:57:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 9530 transitions. [2023-03-31 01:57:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-03-31 01:57:41,424 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:41,424 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] [2023-03-31 01:57:41,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:57:41,425 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:41,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:41,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1656355949, now seen corresponding path program 1 times [2023-03-31 01:57:41,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:41,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48726925] [2023-03-31 01:57:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:41,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:41,891 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 01:57:41,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48726925] [2023-03-31 01:57:41,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48726925] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:41,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:41,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:57:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271440318] [2023-03-31 01:57:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:57:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:57:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:57:41,893 INFO L87 Difference]: Start difference. First operand 6331 states and 9530 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:49,685 INFO L93 Difference]: Finished difference Result 94167 states and 142152 transitions. [2023-03-31 01:57:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:57:49,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2023-03-31 01:57:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:49,936 INFO L225 Difference]: With dead ends: 94167 [2023-03-31 01:57:49,937 INFO L226 Difference]: Without dead ends: 87893 [2023-03-31 01:57:49,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:57:49,982 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 2426 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:49,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2426 Valid, 3901 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87893 states. [2023-03-31 01:57:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87893 to 12603. [2023-03-31 01:57:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12603 states, 12599 states have (on average 1.4978172870862767) internal successors, (18871), 12599 states have internal predecessors, (18871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12603 states to 12603 states and 18874 transitions. [2023-03-31 01:57:52,826 INFO L78 Accepts]: Start accepts. Automaton has 12603 states and 18874 transitions. Word has length 97 [2023-03-31 01:57:52,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:52,826 INFO L495 AbstractCegarLoop]: Abstraction has 12603 states and 18874 transitions. [2023-03-31 01:57:52,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 12603 states and 18874 transitions. [2023-03-31 01:57:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-03-31 01:57:52,827 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:52,827 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] [2023-03-31 01:57:52,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:57:52,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:52,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash 781610702, now seen corresponding path program 1 times [2023-03-31 01:57:52,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:52,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906032054] [2023-03-31 01:57:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:53,114 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 01:57:53,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906032054] [2023-03-31 01:57:53,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906032054] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:53,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:53,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:53,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067514056] [2023-03-31 01:57:53,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:53,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:53,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:53,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:53,116 INFO L87 Difference]: Start difference. First operand 12603 states and 18874 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:56,360 INFO L93 Difference]: Finished difference Result 31361 states and 47038 transitions. [2023-03-31 01:57:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-03-31 01:57:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:56,412 INFO L225 Difference]: With dead ends: 31361 [2023-03-31 01:57:56,412 INFO L226 Difference]: Without dead ends: 18815 [2023-03-31 01:57:56,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:56,440 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 81 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:56,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 347 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18815 states. [2023-03-31 01:57:59,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18815 to 18813. [2023-03-31 01:57:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4933808283268648) internal successors, (28089), 18809 states have internal predecessors, (28089), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 28092 transitions. [2023-03-31 01:57:59,179 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 28092 transitions. Word has length 99 [2023-03-31 01:57:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:59,179 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 28092 transitions. [2023-03-31 01:57:59,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:59,180 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 28092 transitions. [2023-03-31 01:57:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-03-31 01:57:59,181 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:59,181 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] [2023-03-31 01:57:59,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:57:59,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:59,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash 801660045, now seen corresponding path program 1 times [2023-03-31 01:57:59,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:59,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181586074] [2023-03-31 01:57:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:59,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:59,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:59,784 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 01:57:59,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:59,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181586074] [2023-03-31 01:57:59,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181586074] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:59,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:59,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:57:59,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164394923] [2023-03-31 01:57:59,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:59,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:57:59,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:59,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:57:59,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:57:59,787 INFO L87 Difference]: Start difference. First operand 18813 states and 28092 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:58:02,747 INFO L93 Difference]: Finished difference Result 37569 states and 56126 transitions. [2023-03-31 01:58:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:58:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-03-31 01:58:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:58:02,778 INFO L225 Difference]: With dead ends: 37569 [2023-03-31 01:58:02,778 INFO L226 Difference]: Without dead ends: 18815 [2023-03-31 01:58:02,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:58:02,815 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 296 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:58:02,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 925 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:58:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18815 states. [2023-03-31 01:58:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18815 to 18813. [2023-03-31 01:58:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.483172949120102) internal successors, (27897), 18809 states have internal predecessors, (27897), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27900 transitions. [2023-03-31 01:58:05,699 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27900 transitions. Word has length 99 [2023-03-31 01:58:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:58:05,700 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27900 transitions. [2023-03-31 01:58:05,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27900 transitions. [2023-03-31 01:58:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-03-31 01:58:05,701 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:58:05,701 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] [2023-03-31 01:58:05,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:58:05,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:58:05,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:58:05,702 INFO L85 PathProgramCache]: Analyzing trace with hash -920251653, now seen corresponding path program 1 times [2023-03-31 01:58:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:58:05,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188987239] [2023-03-31 01:58:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:58:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:58:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:58:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:06,149 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 01:58:06,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:58:06,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188987239] [2023-03-31 01:58:06,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188987239] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:58:06,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:58:06,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:58:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634664731] [2023-03-31 01:58:06,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:58:06,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:58:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:58:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:58:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:58:06,152 INFO L87 Difference]: Start difference. First operand 18813 states and 27900 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:58:09,157 INFO L93 Difference]: Finished difference Result 37567 states and 55741 transitions. [2023-03-31 01:58:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:58:09,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-03-31 01:58:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:58:09,189 INFO L225 Difference]: With dead ends: 37567 [2023-03-31 01:58:09,190 INFO L226 Difference]: Without dead ends: 18813 [2023-03-31 01:58:09,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:58:09,220 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 453 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:58:09,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 126 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:58:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-03-31 01:58:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-03-31 01:58:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4729650699133394) internal successors, (27705), 18809 states have internal predecessors, (27705), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27708 transitions. [2023-03-31 01:58:12,016 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27708 transitions. Word has length 100 [2023-03-31 01:58:12,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:58:12,016 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27708 transitions. [2023-03-31 01:58:12,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27708 transitions. [2023-03-31 01:58:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-03-31 01:58:12,017 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:58:12,017 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] [2023-03-31 01:58:12,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:58:12,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:58:12,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:58:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1633298528, now seen corresponding path program 1 times [2023-03-31 01:58:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:58:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183526557] [2023-03-31 01:58:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:58:12,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:58:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:58:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:12,369 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 01:58:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:58:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183526557] [2023-03-31 01:58:12,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183526557] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:58:12,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:58:12,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:58:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495201971] [2023-03-31 01:58:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:58:12,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:58:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:58:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:58:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:58:12,371 INFO L87 Difference]: Start difference. First operand 18813 states and 27708 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:58:15,467 INFO L93 Difference]: Finished difference Result 37567 states and 55357 transitions. [2023-03-31 01:58:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:58:15,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-03-31 01:58:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:58:15,498 INFO L225 Difference]: With dead ends: 37567 [2023-03-31 01:58:15,498 INFO L226 Difference]: Without dead ends: 18813 [2023-03-31 01:58:15,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:58:15,517 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 437 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:58:15,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 134 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:58:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-03-31 01:58:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-03-31 01:58:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4627571907065766) internal successors, (27513), 18809 states have internal predecessors, (27513), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27516 transitions. [2023-03-31 01:58:18,381 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27516 transitions. Word has length 100 [2023-03-31 01:58:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:58:18,381 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27516 transitions. [2023-03-31 01:58:18,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:18,382 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27516 transitions. [2023-03-31 01:58:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-03-31 01:58:18,382 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:58:18,383 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] [2023-03-31 01:58:18,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:58:18,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:58:18,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:58:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2001569755, now seen corresponding path program 1 times [2023-03-31 01:58:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:58:18,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762607597] [2023-03-31 01:58:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:58:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:58:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:58:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:18,696 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 01:58:18,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:58:18,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762607597] [2023-03-31 01:58:18,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762607597] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:58:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:58:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:58:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167781955] [2023-03-31 01:58:18,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:58:18,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:58:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:58:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:58:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:58:18,698 INFO L87 Difference]: Start difference. First operand 18813 states and 27516 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:58:21,782 INFO L93 Difference]: Finished difference Result 37567 states and 54973 transitions. [2023-03-31 01:58:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:58:21,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-03-31 01:58:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:58:21,807 INFO L225 Difference]: With dead ends: 37567 [2023-03-31 01:58:21,807 INFO L226 Difference]: Without dead ends: 18813 [2023-03-31 01:58:21,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:58:21,828 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 382 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:58:21,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 166 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:58:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-03-31 01:58:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-03-31 01:58:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4525493114998138) internal successors, (27321), 18809 states have internal predecessors, (27321), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27324 transitions. [2023-03-31 01:58:24,747 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27324 transitions. Word has length 100 [2023-03-31 01:58:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:58:24,747 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27324 transitions. [2023-03-31 01:58:24,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:58:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27324 transitions. [2023-03-31 01:58:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-03-31 01:58:24,748 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:58:24,748 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] [2023-03-31 01:58:24,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:58:24,748 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:58:24,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:58:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1472279254, now seen corresponding path program 1 times [2023-03-31 01:58:24,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:58:24,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599390954] [2023-03-31 01:58:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:58:24,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:58:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:58:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:58:25,078 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 01:58:25,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:58:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599390954] [2023-03-31 01:58:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599390954] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:58:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:58:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:58:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501052332] [2023-03-31 01:58:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:58:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:58:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:58:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:58:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:58:25,080 INFO L87 Difference]: Start difference. First operand 18813 states and 27324 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)