/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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:54:30,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:54:30,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:54:30,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:54:30,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:54:30,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:54:30,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:54:30,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:54:30,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:54:30,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:54:30,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:54:30,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:54:30,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:54:30,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:54:30,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:54:30,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:54:30,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:54:30,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:54:30,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:54:30,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:54:30,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:54:30,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:54:30,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:54:30,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:54:30,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:54:30,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:54:30,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:54:30,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:54:30,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:54:30,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:54:30,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:54:30,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:54:30,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:54:30,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:54:30,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:54:30,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:54:30,106 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 01:54:30,140 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:54:30,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:54:30,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:54:30,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:54:30,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:54:30,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:54:30,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:54:30,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:54:30,142 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:54:30,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:54:30,143 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:54:30,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:54:30,145 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:54:30,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:54:30,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:54:30,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:54:30,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:54:30,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:54:30,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:54:30,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:54:30,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:54:30,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:54:30,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:54:30,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:54:30,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:54:30,147 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:54:30,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:54:30,147 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:54:30,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:54:30,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:54:30,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:54:30,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:54:30,407 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:54:30,408 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:54:30,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-03-31 01:54:31,563 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:54:31,767 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:54:31,767 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-03-31 01:54:31,775 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3add5a9/2fe8b0090e3d459a81e5f0b493ccfdce/FLAG12af439e2 [2023-03-31 01:54:31,789 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3add5a9/2fe8b0090e3d459a81e5f0b493ccfdce [2023-03-31 01:54:31,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:54:31,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:54:31,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:54:31,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:54:31,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:54:31,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:54:31" (1/1) ... [2023-03-31 01:54:31,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a85733a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:31, skipping insertion in model container [2023-03-31 01:54:31,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:54:31" (1/1) ... [2023-03-31 01:54:31,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:54:31,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:54:32,016 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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6636,6649] [2023-03-31 01:54:32,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:54:32,070 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:54:32,120 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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6636,6649] [2023-03-31 01:54:32,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:54:32,179 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:54:32,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32 WrapperNode [2023-03-31 01:54:32,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:54:32,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:54:32,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:54:32,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:54:32,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:54:32,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:54:32,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:54:32,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:54:32,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (1/1) ... [2023-03-31 01:54:32,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:54:32,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:54:32,265 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 01:54:32,273 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 01:54:32,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:54:32,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:54:32,302 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:54:32,302 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:54:32,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:54:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:54:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:54:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:54:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:54:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:54:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:54:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:54:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:54:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:54:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:54:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:54:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:54:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:54:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:54:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:54:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:54:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:54:32,411 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:54:32,415 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:54:33,036 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:54:33,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:54:33,044 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:54:33,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:54:33 BoogieIcfgContainer [2023-03-31 01:54:33,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:54:33,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:54:33,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:54:33,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:54:33,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:54:31" (1/3) ... [2023-03-31 01:54:33,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c16105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:54:33, skipping insertion in model container [2023-03-31 01:54:33,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:54:32" (2/3) ... [2023-03-31 01:54:33,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c16105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:54:33, skipping insertion in model container [2023-03-31 01:54:33,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:54:33" (3/3) ... [2023-03-31 01:54:33,054 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-03-31 01:54:33,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:54:33,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:54:33,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:54:33,117 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;@1a981d98, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:54:33,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:54:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 122 states have (on average 1.7377049180327868) internal successors, (212), 124 states have internal predecessors, (212), 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 01:54:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-03-31 01:54:33,129 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:33,129 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] [2023-03-31 01:54:33,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:33,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash 54842273, now seen corresponding path program 1 times [2023-03-31 01:54:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579019686] [2023-03-31 01:54:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:33,876 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 01:54:33,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:33,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579019686] [2023-03-31 01:54:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579019686] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:33,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:33,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:33,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845796826] [2023-03-31 01:54:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:33,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:33,908 INFO L87 Difference]: Start difference. First operand has 129 states, 122 states have (on average 1.7377049180327868) internal successors, (212), 124 states have internal predecessors, (212), 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 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 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 01:54:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:35,205 INFO L93 Difference]: Finished difference Result 607 states and 953 transitions. [2023-03-31 01:54:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:54:35,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 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 65 [2023-03-31 01:54:35,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:35,227 INFO L225 Difference]: With dead ends: 607 [2023-03-31 01:54:35,227 INFO L226 Difference]: Without dead ends: 514 [2023-03-31 01:54:35,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:54:35,235 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 912 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:35,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1632 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:54:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-03-31 01:54:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 188. [2023-03-31 01:54:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.4456521739130435) internal successors, (266), 184 states have internal predecessors, (266), 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 01:54:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 269 transitions. [2023-03-31 01:54:35,306 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 269 transitions. Word has length 65 [2023-03-31 01:54:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:35,307 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 269 transitions. [2023-03-31 01:54:35,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 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 01:54:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 269 transitions. [2023-03-31 01:54:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:54:35,309 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:35,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:54:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:54:35,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:35,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1443445838, now seen corresponding path program 1 times [2023-03-31 01:54:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476751815] [2023-03-31 01:54:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:35,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:35,630 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 01:54:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:35,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476751815] [2023-03-31 01:54:35,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476751815] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:35,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:35,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465713366] [2023-03-31 01:54:35,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:35,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:35,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:35,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:35,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:35,635 INFO L87 Difference]: Start difference. First operand 188 states and 269 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:36,469 INFO L93 Difference]: Finished difference Result 657 states and 998 transitions. [2023-03-31 01:54:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 67 [2023-03-31 01:54:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:36,473 INFO L225 Difference]: With dead ends: 657 [2023-03-31 01:54:36,473 INFO L226 Difference]: Without dead ends: 557 [2023-03-31 01:54:36,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:36,475 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 512 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:36,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 905 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:54:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-03-31 01:54:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 232. [2023-03-31 01:54:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 228 states have (on average 1.469298245614035) internal successors, (335), 228 states have internal predecessors, (335), 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 01:54:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 338 transitions. [2023-03-31 01:54:36,506 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 338 transitions. Word has length 67 [2023-03-31 01:54:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:36,506 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 338 transitions. [2023-03-31 01:54:36,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 338 transitions. [2023-03-31 01:54:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:54:36,508 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:36,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:54:36,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:54:36,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:36,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash -652385372, now seen corresponding path program 1 times [2023-03-31 01:54:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654296641] [2023-03-31 01:54:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:36,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:36,753 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 01:54:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654296641] [2023-03-31 01:54:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654296641] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675312580] [2023-03-31 01:54:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:36,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:36,756 INFO L87 Difference]: Start difference. First operand 232 states and 338 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:37,465 INFO L93 Difference]: Finished difference Result 717 states and 1092 transitions. [2023-03-31 01:54:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:37,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 67 [2023-03-31 01:54:37,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:37,469 INFO L225 Difference]: With dead ends: 717 [2023-03-31 01:54:37,469 INFO L226 Difference]: Without dead ends: 617 [2023-03-31 01:54:37,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:37,477 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 589 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:37,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 802 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:54:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-03-31 01:54:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 352. [2023-03-31 01:54:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 348 states have (on average 1.5028735632183907) internal successors, (523), 348 states have internal predecessors, (523), 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 01:54:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 526 transitions. [2023-03-31 01:54:37,529 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 526 transitions. Word has length 67 [2023-03-31 01:54:37,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:37,530 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 526 transitions. [2023-03-31 01:54:37,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 526 transitions. [2023-03-31 01:54:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:54:37,536 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:37,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:54:37,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:54:37,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:37,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -960494125, now seen corresponding path program 1 times [2023-03-31 01:54:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753365204] [2023-03-31 01:54:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:37,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:37,795 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 01:54:37,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:37,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753365204] [2023-03-31 01:54:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753365204] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:37,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:37,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420653622] [2023-03-31 01:54:37,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:37,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:37,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:37,798 INFO L87 Difference]: Start difference. First operand 352 states and 526 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:38,379 INFO L93 Difference]: Finished difference Result 767 states and 1170 transitions. [2023-03-31 01:54:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 67 [2023-03-31 01:54:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:38,383 INFO L225 Difference]: With dead ends: 767 [2023-03-31 01:54:38,383 INFO L226 Difference]: Without dead ends: 667 [2023-03-31 01:54:38,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:38,385 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 670 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:38,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 790 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:54:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-03-31 01:54:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 402. [2023-03-31 01:54:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 398 states have (on average 1.5100502512562815) internal successors, (601), 398 states have internal predecessors, (601), 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 01:54:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 604 transitions. [2023-03-31 01:54:38,430 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 604 transitions. Word has length 67 [2023-03-31 01:54:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:38,430 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 604 transitions. [2023-03-31 01:54:38,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 604 transitions. [2023-03-31 01:54:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:54:38,431 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:38,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:54:38,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:54:38,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:38,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 13558267, now seen corresponding path program 1 times [2023-03-31 01:54:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:38,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78070569] [2023-03-31 01:54:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:38,581 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 01:54:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78070569] [2023-03-31 01:54:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78070569] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:54:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606545903] [2023-03-31 01:54:38,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:38,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:54:38,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:54:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:54:38,593 INFO L87 Difference]: Start difference. First operand 402 states and 604 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 01:54:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:38,863 INFO L93 Difference]: Finished difference Result 703 states and 1073 transitions. [2023-03-31 01:54:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:54:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 67 [2023-03-31 01:54:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:38,866 INFO L225 Difference]: With dead ends: 703 [2023-03-31 01:54:38,866 INFO L226 Difference]: Without dead ends: 401 [2023-03-31 01:54:38,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:54:38,868 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:38,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 322 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:54:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-03-31 01:54:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2023-03-31 01:54:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 1.4962216624685138) internal successors, (594), 397 states have internal predecessors, (594), 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 01:54:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 597 transitions. [2023-03-31 01:54:38,909 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 597 transitions. Word has length 67 [2023-03-31 01:54:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:38,910 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 597 transitions. [2023-03-31 01:54:38,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 01:54:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 597 transitions. [2023-03-31 01:54:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:54:38,911 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:38,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:54:38,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:54:38,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:38,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash 185184218, now seen corresponding path program 1 times [2023-03-31 01:54:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351647986] [2023-03-31 01:54:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:38,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:39,236 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 01:54:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:39,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351647986] [2023-03-31 01:54:39,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351647986] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:39,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:39,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935841925] [2023-03-31 01:54:39,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:39,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:39,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:39,239 INFO L87 Difference]: Start difference. First operand 401 states and 597 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:39,851 INFO L93 Difference]: Finished difference Result 842 states and 1280 transitions. [2023-03-31 01:54:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:39,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 67 [2023-03-31 01:54:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:39,854 INFO L225 Difference]: With dead ends: 842 [2023-03-31 01:54:39,854 INFO L226 Difference]: Without dead ends: 547 [2023-03-31 01:54:39,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:54:39,855 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 108 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:39,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 623 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:54:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-03-31 01:54:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2023-03-31 01:54:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 541 states have (on average 1.5046210720887245) internal successors, (814), 541 states have internal predecessors, (814), 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 01:54:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 817 transitions. [2023-03-31 01:54:39,910 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 817 transitions. Word has length 67 [2023-03-31 01:54:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:39,910 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 817 transitions. [2023-03-31 01:54:39,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 817 transitions. [2023-03-31 01:54:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:54:39,911 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:39,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:54:39,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:54:39,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:39,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2054461865, now seen corresponding path program 1 times [2023-03-31 01:54:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:39,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12206149] [2023-03-31 01:54:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:40,136 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 01:54:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12206149] [2023-03-31 01:54:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12206149] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:40,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:40,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:54:40,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129519456] [2023-03-31 01:54:40,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:40,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:54:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:54:40,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:40,138 INFO L87 Difference]: Start difference. First operand 545 states and 817 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:40,775 INFO L93 Difference]: Finished difference Result 961 states and 1453 transitions. [2023-03-31 01:54:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:54:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 67 [2023-03-31 01:54:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:40,779 INFO L225 Difference]: With dead ends: 961 [2023-03-31 01:54:40,779 INFO L226 Difference]: Without dead ends: 862 [2023-03-31 01:54:40,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:40,781 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 634 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:40,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 942 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:54:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-03-31 01:54:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 653. [2023-03-31 01:54:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.5115562403697997) internal successors, (981), 649 states have internal predecessors, (981), 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 01:54:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 984 transitions. [2023-03-31 01:54:40,844 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 984 transitions. Word has length 67 [2023-03-31 01:54:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:40,845 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 984 transitions. [2023-03-31 01:54:40,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 01:54:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 984 transitions. [2023-03-31 01:54:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-03-31 01:54:40,846 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:40,846 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] [2023-03-31 01:54:40,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:54:40,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:40,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1443834137, now seen corresponding path program 1 times [2023-03-31 01:54:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912855577] [2023-03-31 01:54:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:41,061 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 01:54:41,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:41,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912855577] [2023-03-31 01:54:41,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912855577] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:41,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:41,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:54:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812842327] [2023-03-31 01:54:41,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:54:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:54:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:54:41,063 INFO L87 Difference]: Start difference. First operand 653 states and 984 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 01:54:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:41,538 INFO L93 Difference]: Finished difference Result 1269 states and 1929 transitions. [2023-03-31 01:54:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:54:41,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 68 [2023-03-31 01:54:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:41,542 INFO L225 Difference]: With dead ends: 1269 [2023-03-31 01:54:41,542 INFO L226 Difference]: Without dead ends: 653 [2023-03-31 01:54:41,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:54:41,544 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 434 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:41,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 101 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-03-31 01:54:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2023-03-31 01:54:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.4930662557781202) internal successors, (969), 649 states have internal predecessors, (969), 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 01:54:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 972 transitions. [2023-03-31 01:54:41,616 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 972 transitions. Word has length 68 [2023-03-31 01:54:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:41,616 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 972 transitions. [2023-03-31 01:54:41,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 01:54:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 972 transitions. [2023-03-31 01:54:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-03-31 01:54:41,618 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:41,619 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] [2023-03-31 01:54:41,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:54:41,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:41,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1785250298, now seen corresponding path program 1 times [2023-03-31 01:54:41,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:41,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779171030] [2023-03-31 01:54:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:41,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:41,836 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 01:54:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779171030] [2023-03-31 01:54:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779171030] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:41,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:41,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:54:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350965513] [2023-03-31 01:54:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:41,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:54:41,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:41,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:54:41,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:54:41,838 INFO L87 Difference]: Start difference. First operand 653 states and 972 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 01:54:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:42,310 INFO L93 Difference]: Finished difference Result 1265 states and 1901 transitions. [2023-03-31 01:54:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:54:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 69 [2023-03-31 01:54:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:42,313 INFO L225 Difference]: With dead ends: 1265 [2023-03-31 01:54:42,313 INFO L226 Difference]: Without dead ends: 653 [2023-03-31 01:54:42,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:54:42,316 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 416 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:42,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 109 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:54:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-03-31 01:54:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2023-03-31 01:54:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.4745762711864407) internal successors, (957), 649 states have internal predecessors, (957), 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 01:54:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 960 transitions. [2023-03-31 01:54:42,393 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 960 transitions. Word has length 69 [2023-03-31 01:54:42,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:42,393 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 960 transitions. [2023-03-31 01:54:42,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 01:54:42,393 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 960 transitions. [2023-03-31 01:54:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 01:54:42,394 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:42,394 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] [2023-03-31 01:54:42,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:54:42,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:42,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2005647574, now seen corresponding path program 1 times [2023-03-31 01:54:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340928351] [2023-03-31 01:54:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:42,603 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 01:54:42,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:42,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340928351] [2023-03-31 01:54:42,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340928351] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:42,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:42,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:54:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728428430] [2023-03-31 01:54:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:42,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:54:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:54:42,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:54:42,605 INFO L87 Difference]: Start difference. First operand 653 states and 960 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 01:54:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:43,092 INFO L93 Difference]: Finished difference Result 1261 states and 1873 transitions. [2023-03-31 01:54:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:54:43,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 70 [2023-03-31 01:54:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:43,096 INFO L225 Difference]: With dead ends: 1261 [2023-03-31 01:54:43,096 INFO L226 Difference]: Without dead ends: 653 [2023-03-31 01:54:43,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:54:43,097 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 398 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:43,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 117 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-03-31 01:54:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2023-03-31 01:54:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.4560862865947612) internal successors, (945), 649 states have internal predecessors, (945), 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 01:54:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 948 transitions. [2023-03-31 01:54:43,205 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 948 transitions. Word has length 70 [2023-03-31 01:54:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:43,205 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 948 transitions. [2023-03-31 01:54:43,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 01:54:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 948 transitions. [2023-03-31 01:54:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-03-31 01:54:43,206 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:43,206 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] [2023-03-31 01:54:43,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:54:43,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:43,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2042573783, now seen corresponding path program 1 times [2023-03-31 01:54:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282697716] [2023-03-31 01:54:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:43,419 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 01:54:43,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:43,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282697716] [2023-03-31 01:54:43,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282697716] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:43,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:43,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:54:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116590293] [2023-03-31 01:54:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:54:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:54:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:54:43,422 INFO L87 Difference]: Start difference. First operand 653 states and 948 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 01:54:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:43,874 INFO L93 Difference]: Finished difference Result 1273 states and 1862 transitions. [2023-03-31 01:54:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:54:43,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 71 [2023-03-31 01:54:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:43,877 INFO L225 Difference]: With dead ends: 1273 [2023-03-31 01:54:43,878 INFO L226 Difference]: Without dead ends: 653 [2023-03-31 01:54:43,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:54:43,879 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 427 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:43,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 93 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:54:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-03-31 01:54:43,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2023-03-31 01:54:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.4375963020030817) internal successors, (933), 649 states have internal predecessors, (933), 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 01:54:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 936 transitions. [2023-03-31 01:54:43,990 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 936 transitions. Word has length 71 [2023-03-31 01:54:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:43,990 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 936 transitions. [2023-03-31 01:54:43,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 01:54:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 936 transitions. [2023-03-31 01:54:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-03-31 01:54:43,991 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:43,991 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] [2023-03-31 01:54:43,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:54:43,992 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:43,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:43,992 INFO L85 PathProgramCache]: Analyzing trace with hash 459823607, now seen corresponding path program 1 times [2023-03-31 01:54:43,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:43,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167658378] [2023-03-31 01:54:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:43,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:44,291 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 01:54:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167658378] [2023-03-31 01:54:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167658378] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:54:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116200585] [2023-03-31 01:54:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:44,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:54:44,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:54:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:54:44,293 INFO L87 Difference]: Start difference. First operand 653 states and 936 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 01:54:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:44,691 INFO L93 Difference]: Finished difference Result 796 states and 1129 transitions. [2023-03-31 01:54:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:54:44,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 72 [2023-03-31 01:54:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:44,694 INFO L225 Difference]: With dead ends: 796 [2023-03-31 01:54:44,694 INFO L226 Difference]: Without dead ends: 794 [2023-03-31 01:54:44,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:54:44,695 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 136 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:44,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 626 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:54:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-03-31 01:54:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 653. [2023-03-31 01:54:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.428351309707242) internal successors, (927), 649 states have internal predecessors, (927), 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 01:54:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 930 transitions. [2023-03-31 01:54:44,806 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 930 transitions. Word has length 72 [2023-03-31 01:54:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:44,806 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 930 transitions. [2023-03-31 01:54:44,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 01:54:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 930 transitions. [2023-03-31 01:54:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-03-31 01:54:44,807 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:44,807 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] [2023-03-31 01:54:44,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:54:44,807 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:44,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1916223475, now seen corresponding path program 1 times [2023-03-31 01:54:44,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:44,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186625358] [2023-03-31 01:54:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:44,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:45,387 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 01:54:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186625358] [2023-03-31 01:54:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186625358] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:45,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:45,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:54:45,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802414926] [2023-03-31 01:54:45,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:45,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-31 01:54:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-31 01:54:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:54:45,389 INFO L87 Difference]: Start difference. First operand 653 states and 930 transitions. Second operand has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 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 01:54:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:47,001 INFO L93 Difference]: Finished difference Result 2951 states and 4216 transitions. [2023-03-31 01:54:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-03-31 01:54:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 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 73 [2023-03-31 01:54:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:47,010 INFO L225 Difference]: With dead ends: 2951 [2023-03-31 01:54:47,010 INFO L226 Difference]: Without dead ends: 2411 [2023-03-31 01:54:47,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-03-31 01:54:47,014 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1617 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 489 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:54:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-03-31 01:54:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 675. [2023-03-31 01:54:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 671 states have (on average 1.4232488822652758) internal successors, (955), 671 states have internal predecessors, (955), 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 01:54:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 958 transitions. [2023-03-31 01:54:47,172 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 958 transitions. Word has length 73 [2023-03-31 01:54:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:47,172 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 958 transitions. [2023-03-31 01:54:47,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 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 01:54:47,173 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 958 transitions. [2023-03-31 01:54:47,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-03-31 01:54:47,173 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:47,173 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] [2023-03-31 01:54:47,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:54:47,174 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:47,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1608114722, now seen corresponding path program 1 times [2023-03-31 01:54:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:47,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568944754] [2023-03-31 01:54:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:47,609 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 01:54:47,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:47,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568944754] [2023-03-31 01:54:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568944754] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:47,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:47,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:54:47,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231585705] [2023-03-31 01:54:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:47,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:54:47,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:54:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:47,611 INFO L87 Difference]: Start difference. First operand 675 states and 958 transitions. Second operand has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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 01:54:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:48,813 INFO L93 Difference]: Finished difference Result 1822 states and 2616 transitions. [2023-03-31 01:54:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:54:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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 73 [2023-03-31 01:54:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:48,818 INFO L225 Difference]: With dead ends: 1822 [2023-03-31 01:54:48,818 INFO L226 Difference]: Without dead ends: 1251 [2023-03-31 01:54:48,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:54:48,820 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1339 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:48,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 294 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:54:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-03-31 01:54:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 653. [2023-03-31 01:54:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.4252696456086287) internal successors, (925), 649 states have internal predecessors, (925), 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 01:54:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 928 transitions. [2023-03-31 01:54:49,000 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 928 transitions. Word has length 73 [2023-03-31 01:54:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:49,001 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 928 transitions. [2023-03-31 01:54:49,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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 01:54:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 928 transitions. [2023-03-31 01:54:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-03-31 01:54:49,002 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:49,002 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] [2023-03-31 01:54:49,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 01:54:49,002 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:49,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash 328103416, now seen corresponding path program 1 times [2023-03-31 01:54:49,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:49,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104737329] [2023-03-31 01:54:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:49,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:49,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:49,350 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 01:54:49,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:49,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104737329] [2023-03-31 01:54:49,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104737329] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:49,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:49,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:54:49,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619888450] [2023-03-31 01:54:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:49,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:54:49,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:54:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:54:49,352 INFO L87 Difference]: Start difference. First operand 653 states and 928 transitions. Second operand has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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 01:54:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:50,405 INFO L93 Difference]: Finished difference Result 1777 states and 2546 transitions. [2023-03-31 01:54:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:54:50,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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 73 [2023-03-31 01:54:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:50,418 INFO L225 Difference]: With dead ends: 1777 [2023-03-31 01:54:50,418 INFO L226 Difference]: Without dead ends: 1236 [2023-03-31 01:54:50,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:54:50,421 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 756 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:50,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 305 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-03-31 01:54:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 653. [2023-03-31 01:54:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.4175654853620956) internal successors, (920), 649 states have internal predecessors, (920), 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 01:54:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 923 transitions. [2023-03-31 01:54:50,615 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 923 transitions. Word has length 73 [2023-03-31 01:54:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:50,616 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 923 transitions. [2023-03-31 01:54:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 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 01:54:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 923 transitions. [2023-03-31 01:54:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-03-31 01:54:50,617 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:50,617 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] [2023-03-31 01:54:50,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 01:54:50,617 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:50,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:50,618 INFO L85 PathProgramCache]: Analyzing trace with hash 383997117, now seen corresponding path program 1 times [2023-03-31 01:54:50,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:50,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418169724] [2023-03-31 01:54:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:51,098 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 01:54:51,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418169724] [2023-03-31 01:54:51,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418169724] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:51,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:51,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:54:51,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696189196] [2023-03-31 01:54:51,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:54:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:54:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:54:51,100 INFO L87 Difference]: Start difference. First operand 653 states and 923 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 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 01:54:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:52,519 INFO L93 Difference]: Finished difference Result 1807 states and 2581 transitions. [2023-03-31 01:54:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:54:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 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 73 [2023-03-31 01:54:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:52,525 INFO L225 Difference]: With dead ends: 1807 [2023-03-31 01:54:52,525 INFO L226 Difference]: Without dead ends: 1246 [2023-03-31 01:54:52,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:54:52,526 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 771 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:52,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 527 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:54:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2023-03-31 01:54:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 653. [2023-03-31 01:54:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.411402157164869) internal successors, (916), 649 states have internal predecessors, (916), 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 01:54:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 919 transitions. [2023-03-31 01:54:52,805 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 919 transitions. Word has length 73 [2023-03-31 01:54:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:52,805 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 919 transitions. [2023-03-31 01:54:52,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 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 01:54:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 919 transitions. [2023-03-31 01:54:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:54:52,806 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:52,806 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] [2023-03-31 01:54:52,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 01:54:52,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:52,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash -526037728, now seen corresponding path program 1 times [2023-03-31 01:54:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355699577] [2023-03-31 01:54:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:53,200 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 01:54:53,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:53,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355699577] [2023-03-31 01:54:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355699577] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:53,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:53,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:54:53,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309710613] [2023-03-31 01:54:53,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:53,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:54:53,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:54:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:54:53,203 INFO L87 Difference]: Start difference. First operand 653 states and 919 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 01:54:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:54,250 INFO L93 Difference]: Finished difference Result 1770 states and 2532 transitions. [2023-03-31 01:54:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 01:54:54,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 74 [2023-03-31 01:54:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:54,255 INFO L225 Difference]: With dead ends: 1770 [2023-03-31 01:54:54,255 INFO L226 Difference]: Without dead ends: 1194 [2023-03-31 01:54:54,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:54:54,257 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1103 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:54,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 271 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:54:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2023-03-31 01:54:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 653. [2023-03-31 01:54:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.4098613251155625) internal successors, (915), 649 states have internal predecessors, (915), 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 01:54:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 918 transitions. [2023-03-31 01:54:54,453 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 918 transitions. Word has length 74 [2023-03-31 01:54:54,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:54,453 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 918 transitions. [2023-03-31 01:54:54,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 01:54:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 918 transitions. [2023-03-31 01:54:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-03-31 01:54:54,454 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:54,454 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] [2023-03-31 01:54:54,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-03-31 01:54:54,455 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:54,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash -115350866, now seen corresponding path program 1 times [2023-03-31 01:54:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746141860] [2023-03-31 01:54:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:55,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:55,160 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 01:54:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746141860] [2023-03-31 01:54:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746141860] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:55,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-03-31 01:54:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800827740] [2023-03-31 01:54:55,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:55,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 01:54:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 01:54:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:54:55,162 INFO L87 Difference]: Start difference. First operand 653 states and 918 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 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 01:54:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:54:57,534 INFO L93 Difference]: Finished difference Result 2526 states and 3624 transitions. [2023-03-31 01:54:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:54:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 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 75 [2023-03-31 01:54:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:54:57,541 INFO L225 Difference]: With dead ends: 2526 [2023-03-31 01:54:57,541 INFO L226 Difference]: Without dead ends: 2318 [2023-03-31 01:54:57,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-03-31 01:54:57,543 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1174 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:54:57,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1235 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:54:57,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2023-03-31 01:54:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 647. [2023-03-31 01:54:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 643 states have (on average 1.4043545878693624) internal successors, (903), 643 states have internal predecessors, (903), 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 01:54:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 906 transitions. [2023-03-31 01:54:57,804 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 906 transitions. Word has length 75 [2023-03-31 01:54:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:54:57,805 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 906 transitions. [2023-03-31 01:54:57,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 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 01:54:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 906 transitions. [2023-03-31 01:54:57,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-03-31 01:54:57,805 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:54:57,806 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] [2023-03-31 01:54:57,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-03-31 01:54:57,806 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:54:57,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:54:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -102741331, now seen corresponding path program 1 times [2023-03-31 01:54:57,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:54:57,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753026480] [2023-03-31 01:54:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:54:57,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:54:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:54:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:54:59,351 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 01:54:59,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:54:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753026480] [2023-03-31 01:54:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753026480] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:54:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:54:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-03-31 01:54:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065499395] [2023-03-31 01:54:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:54:59,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-03-31 01:54:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:54:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-03-31 01:54:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:54:59,354 INFO L87 Difference]: Start difference. First operand 647 states and 906 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 01:55:06,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:55:06,413 INFO L93 Difference]: Finished difference Result 3759 states and 5399 transitions. [2023-03-31 01:55:06,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-03-31 01:55:06,414 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 75 [2023-03-31 01:55:06,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:55:06,426 INFO L225 Difference]: With dead ends: 3759 [2023-03-31 01:55:06,427 INFO L226 Difference]: Without dead ends: 3551 [2023-03-31 01:55:06,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2023-03-31 01:55:06,429 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1655 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 3682 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 4936 SdHoareTripleChecker+Invalid, 3703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:55:06,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 4936 Invalid, 3703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3682 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 01:55:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2023-03-31 01:55:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 656. [2023-03-31 01:55:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 652 states have (on average 1.4003067484662577) internal successors, (913), 652 states have internal predecessors, (913), 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 01:55:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 916 transitions. [2023-03-31 01:55:06,854 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 916 transitions. Word has length 75 [2023-03-31 01:55:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:55:06,855 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 916 transitions. [2023-03-31 01:55:06,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 23 states have internal predecessors, (72), 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 01:55:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 916 transitions. [2023-03-31 01:55:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-03-31 01:55:06,855 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:55:06,856 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] [2023-03-31 01:55:06,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-03-31 01:55:06,856 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:55:06,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:55:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1040902956, now seen corresponding path program 1 times [2023-03-31 01:55:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:55:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117360115] [2023-03-31 01:55:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:55:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:55:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:55:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:55:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:55:07,418 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 01:55:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:55:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117360115] [2023-03-31 01:55:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117360115] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:55:07,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:55:07,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 01:55:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863285605] [2023-03-31 01:55:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:55:07,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 01:55:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:55:07,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 01:55:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-03-31 01:55:07,420 INFO L87 Difference]: Start difference. First operand 656 states and 916 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 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 01:55:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:55:09,948 INFO L93 Difference]: Finished difference Result 2485 states and 3561 transitions. [2023-03-31 01:55:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:55:09,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 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 75 [2023-03-31 01:55:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:55:09,955 INFO L225 Difference]: With dead ends: 2485 [2023-03-31 01:55:09,955 INFO L226 Difference]: Without dead ends: 2262 [2023-03-31 01:55:09,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-03-31 01:55:09,956 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 849 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:55:09,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1019 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:55:09,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-03-31 01:55:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 630. [2023-03-31 01:55:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 626 states have (on average 1.404153354632588) internal successors, (879), 626 states have internal predecessors, (879), 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 01:55:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 882 transitions. [2023-03-31 01:55:10,326 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 882 transitions. Word has length 75 [2023-03-31 01:55:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:55:10,327 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 882 transitions. [2023-03-31 01:55:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 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 01:55:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 882 transitions. [2023-03-31 01:55:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-03-31 01:55:10,328 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:55:10,328 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] [2023-03-31 01:55:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-03-31 01:55:10,328 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:55:10,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:55:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash -996619670, now seen corresponding path program 1 times [2023-03-31 01:55:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:55:10,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972592162] [2023-03-31 01:55:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:55:10,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:55:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:55:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:55:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:55:11,677 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 01:55:11,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:55:11,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972592162] [2023-03-31 01:55:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972592162] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:55:11,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:55:11,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-03-31 01:55:11,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354963813] [2023-03-31 01:55:11,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:55:11,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-03-31 01:55:11,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:55:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-03-31 01:55:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:55:11,679 INFO L87 Difference]: Start difference. First operand 630 states and 882 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 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 01:55:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:55:18,957 INFO L93 Difference]: Finished difference Result 4649 states and 6693 transitions. [2023-03-31 01:55:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-03-31 01:55:18,957 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 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 76 [2023-03-31 01:55:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:55:18,971 INFO L225 Difference]: With dead ends: 4649 [2023-03-31 01:55:18,971 INFO L226 Difference]: Without dead ends: 4452 [2023-03-31 01:55:18,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=418, Invalid=2234, Unknown=0, NotChecked=0, Total=2652 [2023-03-31 01:55:18,974 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1991 mSDsluCounter, 5816 mSDsCounter, 0 mSdLazyCounter, 4568 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 6179 SdHoareTripleChecker+Invalid, 4602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:55:18,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 6179 Invalid, 4602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4568 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-31 01:55:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2023-03-31 01:55:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 639. [2023-03-31 01:55:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 635 states have (on average 1.4015748031496063) internal successors, (890), 635 states have internal predecessors, (890), 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 01:55:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 893 transitions. [2023-03-31 01:55:19,457 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 893 transitions. Word has length 76 [2023-03-31 01:55:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:55:19,457 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 893 transitions. [2023-03-31 01:55:19,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 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 01:55:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 893 transitions. [2023-03-31 01:55:19,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-03-31 01:55:19,458 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:55:19,458 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] [2023-03-31 01:55:19,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-03-31 01:55:19,458 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:55:19,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:55:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1669022832, now seen corresponding path program 1 times [2023-03-31 01:55:19,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:55:19,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646580275] [2023-03-31 01:55:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:55:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:55:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:55:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:55:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:55:20,431 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 01:55:20,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:55:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646580275] [2023-03-31 01:55:20,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646580275] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:55:20,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:55:20,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-03-31 01:55:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459484611] [2023-03-31 01:55:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:55:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-03-31 01:55:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:55:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-03-31 01:55:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-03-31 01:55:20,433 INFO L87 Difference]: Start difference. First operand 639 states and 893 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 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)