/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:20:05,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:20:05,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:20:06,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:20:06,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:20:06,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:20:06,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:20:06,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:20:06,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:20:06,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:20:06,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:20:06,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:20:06,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:20:06,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:20:06,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:20:06,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:20:06,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:20:06,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:20:06,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:20:06,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:20:06,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:20:06,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:20:06,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:20:06,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:20:06,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:20:06,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:20:06,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:20:06,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:20:06,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:20:06,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:20:06,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:20:06,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:20:06,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:20:06,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:20:06,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:20:06,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:20:06,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:20:06,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:20:06,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:20:06,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:20:06,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:20:06,078 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 [2023-04-02 05:20:06,111 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:20:06,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:20:06,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:20:06,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:20:06,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:20:06,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:20:06,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:20:06,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:20:06,114 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:20:06,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:20:06,115 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:20:06,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:20:06,117 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:20:06,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:20:06,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:20:06,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:20:06,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:20:06,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:20:06,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:20:06,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:20:06,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:20:06,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:20:06,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:20:06,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:20:06,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:20:06,118 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:20:06,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:20:06,119 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:20:06,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:20:06,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:20:06,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:20:06,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:20:06,351 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:20:06,352 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:20:06,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2023-04-02 05:20:07,535 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:20:07,739 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:20:07,739 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2023-04-02 05:20:07,746 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f26fc25/16ee2d2b66d749b58626bb1adabb9770/FLAGf072f8fcb [2023-04-02 05:20:07,756 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f26fc25/16ee2d2b66d749b58626bb1adabb9770 [2023-04-02 05:20:07,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:20:07,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:20:07,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:20:07,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:20:07,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:20:07,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:20:07" (1/1) ... [2023-04-02 05:20:07,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d539fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:07, skipping insertion in model container [2023-04-02 05:20:07,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:20:07" (1/1) ... [2023-04-02 05:20:07,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:20:07,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:20:07,975 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2023-04-02 05:20:07,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:20:07,989 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:20:08,047 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2023-04-02 05:20:08,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:20:08,061 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:20:08,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08 WrapperNode [2023-04-02 05:20:08,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:20:08,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:20:08,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:20:08,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:20:08,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:20:08,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:20:08,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:20:08,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:20:08,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (1/1) ... [2023-04-02 05:20:08,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:20:08,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:08,151 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) [2023-04-02 05:20:08,155 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 [2023-04-02 05:20:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:20:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:20:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:20:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:20:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-02 05:20:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:20:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:20:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:20:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:20:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:20:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:20:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:20:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:20:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:20:08,332 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:20:08,334 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:20:08,863 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:20:08,871 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:20:08,871 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:20:08,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:20:08 BoogieIcfgContainer [2023-04-02 05:20:08,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:20:08,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:20:08,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:20:08,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:20:08,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:20:07" (1/3) ... [2023-04-02 05:20:08,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bca3e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:20:08, skipping insertion in model container [2023-04-02 05:20:08,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:20:08" (2/3) ... [2023-04-02 05:20:08,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bca3e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:20:08, skipping insertion in model container [2023-04-02 05:20:08,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:20:08" (3/3) ... [2023-04-02 05:20:08,880 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2023-04-02 05:20:08,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:20:08,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:20:08,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:20:08,946 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;@58a03c53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:20:08,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:20:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 113 states have internal predecessors, (185), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 05:20:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:20:08,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:08,959 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] [2023-04-02 05:20:08,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:08,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash -83415886, now seen corresponding path program 1 times [2023-04-02 05:20:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406224492] [2023-04-02 05:20:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:20:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:20:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:20:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:20:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:20:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:20:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:20:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:20:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:09,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406224492] [2023-04-02 05:20:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406224492] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:20:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412214270] [2023-04-02 05:20:09,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:09,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:20:09,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:20:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:20:09,767 INFO L87 Difference]: Start difference. First operand has 137 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 113 states have internal predecessors, (185), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:10,857 INFO L93 Difference]: Finished difference Result 214 states and 319 transitions. [2023-04-02 05:20:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:20:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 62 [2023-04-02 05:20:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:10,873 INFO L225 Difference]: With dead ends: 214 [2023-04-02 05:20:10,873 INFO L226 Difference]: Without dead ends: 132 [2023-04-02 05:20:10,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:20:10,883 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 410 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:10,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 62 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:20:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-04-02 05:20:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-04-02 05:20:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 108 states have (on average 1.6481481481481481) internal successors, (178), 109 states have internal predecessors, (178), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:20:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 201 transitions. [2023-04-02 05:20:10,969 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 201 transitions. Word has length 62 [2023-04-02 05:20:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:10,970 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 201 transitions. [2023-04-02 05:20:10,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 201 transitions. [2023-04-02 05:20:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:20:10,980 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:10,980 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] [2023-04-02 05:20:10,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:20:10,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:10,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash -436504268, now seen corresponding path program 1 times [2023-04-02 05:20:10,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:10,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125292221] [2023-04-02 05:20:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:10,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:20:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:20:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:20:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:20:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:20:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:20:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:20:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:20:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:11,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:11,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125292221] [2023-04-02 05:20:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125292221] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:20:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427893750] [2023-04-02 05:20:11,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:11,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:20:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:20:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:20:11,579 INFO L87 Difference]: Start difference. First operand 132 states and 201 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:20:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:13,359 INFO L93 Difference]: Finished difference Result 212 states and 311 transitions. [2023-04-02 05:20:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 05:20:13,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 62 [2023-04-02 05:20:13,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:13,365 INFO L225 Difference]: With dead ends: 212 [2023-04-02 05:20:13,365 INFO L226 Difference]: Without dead ends: 132 [2023-04-02 05:20:13,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-04-02 05:20:13,372 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1091 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:13,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 156 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:20:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-04-02 05:20:13,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-04-02 05:20:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 109 states have internal predecessors, (138), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:20:13,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 161 transitions. [2023-04-02 05:20:13,408 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 161 transitions. Word has length 62 [2023-04-02 05:20:13,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:13,409 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 161 transitions. [2023-04-02 05:20:13,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:20:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 161 transitions. [2023-04-02 05:20:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:20:13,410 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:13,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:13,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:20:13,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:13,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1361654523, now seen corresponding path program 1 times [2023-04-02 05:20:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:13,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710219985] [2023-04-02 05:20:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:13,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:14,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710219985] [2023-04-02 05:20:14,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710219985] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:14,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:14,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:20:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634660038] [2023-04-02 05:20:14,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:14,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:20:14,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:14,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:20:14,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:20:14,348 INFO L87 Difference]: Start difference. First operand 132 states and 161 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 15 states have internal predecessors, (79), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:29,762 INFO L93 Difference]: Finished difference Result 1506 states and 2149 transitions. [2023-04-02 05:20:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-04-02 05:20:29,763 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 15 states have internal predecessors, (79), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2023-04-02 05:20:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:29,773 INFO L225 Difference]: With dead ends: 1506 [2023-04-02 05:20:29,773 INFO L226 Difference]: Without dead ends: 1432 [2023-04-02 05:20:29,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12482 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=4801, Invalid=28505, Unknown=0, NotChecked=0, Total=33306 [2023-04-02 05:20:29,787 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 3032 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 6631 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 7019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 6631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:29,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 440 Invalid, 7019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 6631 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-02 05:20:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-02 05:20:29,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 520. [2023-04-02 05:20:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 404 states have (on average 1.4108910891089108) internal successors, (570), 417 states have internal predecessors, (570), 52 states have call successors, (52), 52 states have call predecessors, (52), 63 states have return successors, (91), 51 states have call predecessors, (91), 51 states have call successors, (91) [2023-04-02 05:20:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 713 transitions. [2023-04-02 05:20:29,899 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 713 transitions. Word has length 101 [2023-04-02 05:20:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:29,900 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 713 transitions. [2023-04-02 05:20:29,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 15 states have internal predecessors, (79), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 713 transitions. [2023-04-02 05:20:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 05:20:29,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:29,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:20:29,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:29,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash -396271989, now seen corresponding path program 1 times [2023-04-02 05:20:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78698707] [2023-04-02 05:20:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:30,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:30,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78698707] [2023-04-02 05:20:30,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78698707] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:30,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:30,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:20:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115429294] [2023-04-02 05:20:30,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:30,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:20:30,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:20:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:20:30,221 INFO L87 Difference]: Start difference. First operand 520 states and 713 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-04-02 05:20:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:31,717 INFO L93 Difference]: Finished difference Result 1404 states and 1979 transitions. [2023-04-02 05:20:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:20:31,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 103 [2023-04-02 05:20:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:31,723 INFO L225 Difference]: With dead ends: 1404 [2023-04-02 05:20:31,723 INFO L226 Difference]: Without dead ends: 942 [2023-04-02 05:20:31,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:20:31,726 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 808 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:31,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 104 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:20:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-04-02 05:20:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-04-02 05:20:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 718 states have (on average 1.415041782729805) internal successors, (1016), 741 states have internal predecessors, (1016), 100 states have call successors, (100), 100 states have call predecessors, (100), 121 states have return successors, (189), 99 states have call predecessors, (189), 99 states have call successors, (189) [2023-04-02 05:20:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1305 transitions. [2023-04-02 05:20:31,901 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1305 transitions. Word has length 103 [2023-04-02 05:20:31,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:31,903 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1305 transitions. [2023-04-02 05:20:31,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-04-02 05:20:31,904 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1305 transitions. [2023-04-02 05:20:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 05:20:31,909 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:31,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:20:31,910 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:31,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1683974445, now seen corresponding path program 1 times [2023-04-02 05:20:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843647654] [2023-04-02 05:20:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:32,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843647654] [2023-04-02 05:20:32,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843647654] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:32,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:32,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:20:32,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502027592] [2023-04-02 05:20:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:20:32,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:20:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:20:32,892 INFO L87 Difference]: Start difference. First operand 940 states and 1305 transitions. Second operand has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 15 states have internal predecessors, (81), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:49,169 INFO L93 Difference]: Finished difference Result 4238 states and 6076 transitions. [2023-04-02 05:20:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2023-04-02 05:20:49,170 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 15 states have internal predecessors, (81), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2023-04-02 05:20:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:49,184 INFO L225 Difference]: With dead ends: 4238 [2023-04-02 05:20:49,185 INFO L226 Difference]: Without dead ends: 3356 [2023-04-02 05:20:49,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12262 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4683, Invalid=27537, Unknown=0, NotChecked=0, Total=32220 [2023-04-02 05:20:49,195 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 4316 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 5510 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 6071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 5510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:49,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4331 Valid, 356 Invalid, 6071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 5510 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-02 05:20:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2023-04-02 05:20:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3275. [2023-04-02 05:20:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 2500 states have (on average 1.4528) internal successors, (3632), 2552 states have internal predecessors, (3632), 362 states have call successors, (362), 362 states have call predecessors, (362), 412 states have return successors, (714), 361 states have call predecessors, (714), 361 states have call successors, (714) [2023-04-02 05:20:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4708 transitions. [2023-04-02 05:20:49,685 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4708 transitions. Word has length 103 [2023-04-02 05:20:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:49,685 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 4708 transitions. [2023-04-02 05:20:49,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 15 states have internal predecessors, (81), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4708 transitions. [2023-04-02 05:20:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 05:20:49,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:49,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:49,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:20:49,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:49,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash 489257348, now seen corresponding path program 1 times [2023-04-02 05:20:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138872165] [2023-04-02 05:20:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:50,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:50,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138872165] [2023-04-02 05:20:50,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138872165] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:50,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:50,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:20:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844087707] [2023-04-02 05:20:50,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:50,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:20:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:20:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:20:50,174 INFO L87 Difference]: Start difference. First operand 3275 states and 4708 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:52,783 INFO L93 Difference]: Finished difference Result 7688 states and 11089 transitions. [2023-04-02 05:20:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 05:20:52,783 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2023-04-02 05:20:52,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:52,801 INFO L225 Difference]: With dead ends: 7688 [2023-04-02 05:20:52,802 INFO L226 Difference]: Without dead ends: 4471 [2023-04-02 05:20:52,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:20:52,811 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 909 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:52,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 107 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:20:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2023-04-02 05:20:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4467. [2023-04-02 05:20:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 3391 states have (on average 1.4467708640519021) internal successors, (4906), 3476 states have internal predecessors, (4906), 496 states have call successors, (496), 496 states have call predecessors, (496), 579 states have return successors, (994), 495 states have call predecessors, (994), 495 states have call successors, (994) [2023-04-02 05:20:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6396 transitions. [2023-04-02 05:20:53,700 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6396 transitions. Word has length 104 [2023-04-02 05:20:53,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:53,701 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6396 transitions. [2023-04-02 05:20:53,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6396 transitions. [2023-04-02 05:20:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 05:20:53,705 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:53,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:53,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:20:53,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:53,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2136682309, now seen corresponding path program 1 times [2023-04-02 05:20:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:53,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232162814] [2023-04-02 05:20:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:54,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:54,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232162814] [2023-04-02 05:20:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232162814] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:54,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:54,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:20:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165286815] [2023-04-02 05:20:54,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:54,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:20:54,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:20:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:20:54,359 INFO L87 Difference]: Start difference. First operand 4467 states and 6396 transitions. Second operand has 19 states, 17 states have (on average 4.823529411764706) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:56,955 INFO L93 Difference]: Finished difference Result 4819 states and 7190 transitions. [2023-04-02 05:20:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:20:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.823529411764706) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2023-04-02 05:20:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:56,977 INFO L225 Difference]: With dead ends: 4819 [2023-04-02 05:20:56,978 INFO L226 Difference]: Without dead ends: 4817 [2023-04-02 05:20:56,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:20:56,980 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 536 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:56,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 330 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:20:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2023-04-02 05:20:57,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 4521. [2023-04-02 05:20:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 3427 states have (on average 1.4388678144149403) internal successors, (4931), 3518 states have internal predecessors, (4931), 502 states have call successors, (502), 502 states have call predecessors, (502), 591 states have return successors, (1012), 501 states have call predecessors, (1012), 501 states have call successors, (1012) [2023-04-02 05:20:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6445 transitions. [2023-04-02 05:20:58,018 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6445 transitions. Word has length 104 [2023-04-02 05:20:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:58,018 INFO L495 AbstractCegarLoop]: Abstraction has 4521 states and 6445 transitions. [2023-04-02 05:20:58,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.823529411764706) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:20:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6445 transitions. [2023-04-02 05:20:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:20:58,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:58,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:58,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:20:58,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:58,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:58,023 INFO L85 PathProgramCache]: Analyzing trace with hash 122614019, now seen corresponding path program 1 times [2023-04-02 05:20:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:58,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235703323] [2023-04-02 05:20:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:58,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:20:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:20:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:20:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:20:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:20:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:20:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235703323] [2023-04-02 05:20:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235703323] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:58,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:58,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:20:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631739469] [2023-04-02 05:20:58,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:58,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:20:58,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:20:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:20:58,433 INFO L87 Difference]: Start difference. First operand 4521 states and 6445 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:01,972 INFO L93 Difference]: Finished difference Result 9178 states and 13158 transitions. [2023-04-02 05:21:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:21:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:21:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:02,003 INFO L225 Difference]: With dead ends: 9178 [2023-04-02 05:21:02,003 INFO L226 Difference]: Without dead ends: 5871 [2023-04-02 05:21:02,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:02,013 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1270 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:02,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 73 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:21:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2023-04-02 05:21:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5184. [2023-04-02 05:21:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 3934 states have (on average 1.4486527707168277) internal successors, (5699), 4049 states have internal predecessors, (5699), 568 states have call successors, (568), 568 states have call predecessors, (568), 681 states have return successors, (1147), 566 states have call predecessors, (1147), 567 states have call successors, (1147) [2023-04-02 05:21:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 7414 transitions. [2023-04-02 05:21:02,923 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 7414 transitions. Word has length 105 [2023-04-02 05:21:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:02,923 INFO L495 AbstractCegarLoop]: Abstraction has 5184 states and 7414 transitions. [2023-04-02 05:21:02,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 7414 transitions. [2023-04-02 05:21:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:21:02,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:02,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:02,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:21:02,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:02,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1917914253, now seen corresponding path program 1 times [2023-04-02 05:21:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:02,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109935828] [2023-04-02 05:21:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:02,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:21:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:21:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:21:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:21:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:21:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:21:03,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:03,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109935828] [2023-04-02 05:21:03,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109935828] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:03,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:03,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:21:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852680772] [2023-04-02 05:21:03,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:03,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:21:03,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:03,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:21:03,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:21:03,352 INFO L87 Difference]: Start difference. First operand 5184 states and 7414 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:06,990 INFO L93 Difference]: Finished difference Result 13402 states and 19160 transitions. [2023-04-02 05:21:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:21:06,990 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:21:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:07,023 INFO L225 Difference]: With dead ends: 13402 [2023-04-02 05:21:07,023 INFO L226 Difference]: Without dead ends: 8282 [2023-04-02 05:21:07,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:07,035 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1670 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:07,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 68 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:21:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2023-04-02 05:21:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 5153. [2023-04-02 05:21:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 3909 states have (on average 1.4474290099769762) internal successors, (5658), 4024 states have internal predecessors, (5658), 565 states have call successors, (565), 565 states have call predecessors, (565), 678 states have return successors, (1141), 563 states have call predecessors, (1141), 564 states have call successors, (1141) [2023-04-02 05:21:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 7364 transitions. [2023-04-02 05:21:07,928 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 7364 transitions. Word has length 105 [2023-04-02 05:21:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:07,928 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 7364 transitions. [2023-04-02 05:21:07,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 7364 transitions. [2023-04-02 05:21:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:21:07,930 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:07,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:07,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:21:07,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:07,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1279166589, now seen corresponding path program 1 times [2023-04-02 05:21:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:07,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278126185] [2023-04-02 05:21:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:21:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:21:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:21:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:21:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:21:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:08,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278126185] [2023-04-02 05:21:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278126185] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:08,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:08,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:21:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342751991] [2023-04-02 05:21:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:08,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:21:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:21:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:21:08,378 INFO L87 Difference]: Start difference. First operand 5153 states and 7364 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:12,048 INFO L93 Difference]: Finished difference Result 12626 states and 17994 transitions. [2023-04-02 05:21:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:21:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:21:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:12,077 INFO L225 Difference]: With dead ends: 12626 [2023-04-02 05:21:12,078 INFO L226 Difference]: Without dead ends: 7557 [2023-04-02 05:21:12,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:12,091 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1720 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:12,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 68 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:21:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2023-04-02 05:21:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 5141. [2023-04-02 05:21:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 3899 states have (on average 1.446524749935881) internal successors, (5640), 4014 states have internal predecessors, (5640), 564 states have call successors, (564), 564 states have call predecessors, (564), 677 states have return successors, (1140), 562 states have call predecessors, (1140), 563 states have call successors, (1140) [2023-04-02 05:21:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 7344 transitions. [2023-04-02 05:21:13,008 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 7344 transitions. Word has length 105 [2023-04-02 05:21:13,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:13,008 INFO L495 AbstractCegarLoop]: Abstraction has 5141 states and 7344 transitions. [2023-04-02 05:21:13,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 7344 transitions. [2023-04-02 05:21:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:21:13,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:13,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:13,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:21:13,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:13,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1274196365, now seen corresponding path program 1 times [2023-04-02 05:21:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:13,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665967379] [2023-04-02 05:21:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:21:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:21:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:21:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:21:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665967379] [2023-04-02 05:21:13,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665967379] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:13,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:13,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:21:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663905378] [2023-04-02 05:21:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:21:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:21:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:21:13,413 INFO L87 Difference]: Start difference. First operand 5141 states and 7344 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:16,876 INFO L93 Difference]: Finished difference Result 11899 states and 16912 transitions. [2023-04-02 05:21:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:21:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:21:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:16,895 INFO L225 Difference]: With dead ends: 11899 [2023-04-02 05:21:16,895 INFO L226 Difference]: Without dead ends: 6860 [2023-04-02 05:21:16,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:16,906 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1848 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:16,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 68 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:21:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2023-04-02 05:21:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 5150. [2023-04-02 05:21:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5150 states, 3905 states have (on average 1.4458386683738795) internal successors, (5646), 4021 states have internal predecessors, (5646), 565 states have call successors, (565), 565 states have call predecessors, (565), 679 states have return successors, (1143), 563 states have call predecessors, (1143), 564 states have call successors, (1143) [2023-04-02 05:21:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 7354 transitions. [2023-04-02 05:21:17,843 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 7354 transitions. Word has length 105 [2023-04-02 05:21:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:17,843 INFO L495 AbstractCegarLoop]: Abstraction has 5150 states and 7354 transitions. [2023-04-02 05:21:17,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 7354 transitions. [2023-04-02 05:21:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:21:17,846 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:17,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:17,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:21:17,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:17,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1380979187, now seen corresponding path program 1 times [2023-04-02 05:21:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218151615] [2023-04-02 05:21:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:21:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:21:18,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:18,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218151615] [2023-04-02 05:21:18,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218151615] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:18,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:18,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:21:18,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696252080] [2023-04-02 05:21:18,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:18,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:21:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:18,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:21:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:21:18,250 INFO L87 Difference]: Start difference. First operand 5150 states and 7354 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:21,688 INFO L93 Difference]: Finished difference Result 10578 states and 14972 transitions. [2023-04-02 05:21:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:21:21,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:21:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:21,705 INFO L225 Difference]: With dead ends: 10578 [2023-04-02 05:21:21,705 INFO L226 Difference]: Without dead ends: 5566 [2023-04-02 05:21:21,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:21,715 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1652 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:21,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 72 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:21:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2023-04-02 05:21:22,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 5173. [2023-04-02 05:21:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 3922 states have (on average 1.44467108618052) internal successors, (5666), 4038 states have internal predecessors, (5666), 568 states have call successors, (568), 568 states have call predecessors, (568), 682 states have return successors, (1147), 566 states have call predecessors, (1147), 567 states have call successors, (1147) [2023-04-02 05:21:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 7381 transitions. [2023-04-02 05:21:22,664 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 7381 transitions. Word has length 105 [2023-04-02 05:21:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:22,665 INFO L495 AbstractCegarLoop]: Abstraction has 5173 states and 7381 transitions. [2023-04-02 05:21:22,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 7381 transitions. [2023-04-02 05:21:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:21:22,667 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:22,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:22,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:21:22,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:22,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:22,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1946433789, now seen corresponding path program 1 times [2023-04-02 05:21:22,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57878603] [2023-04-02 05:21:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:21:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:21:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:21:23,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:23,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57878603] [2023-04-02 05:21:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57878603] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:23,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:21:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955303552] [2023-04-02 05:21:23,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:21:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:21:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:21:23,067 INFO L87 Difference]: Start difference. First operand 5173 states and 7381 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:26,607 INFO L93 Difference]: Finished difference Result 11252 states and 15945 transitions. [2023-04-02 05:21:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:21:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:21:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:26,622 INFO L225 Difference]: With dead ends: 11252 [2023-04-02 05:21:26,622 INFO L226 Difference]: Without dead ends: 6215 [2023-04-02 05:21:26,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:26,633 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1804 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:26,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 68 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:21:26,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2023-04-02 05:21:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 5226. [2023-04-02 05:21:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5226 states, 3960 states have (on average 1.4446969696969696) internal successors, (5721), 4083 states have internal predecessors, (5721), 572 states have call successors, (572), 572 states have call predecessors, (572), 693 states have return successors, (1161), 570 states have call predecessors, (1161), 571 states have call successors, (1161) [2023-04-02 05:21:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 7454 transitions. [2023-04-02 05:21:27,619 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 7454 transitions. Word has length 105 [2023-04-02 05:21:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:27,619 INFO L495 AbstractCegarLoop]: Abstraction has 5226 states and 7454 transitions. [2023-04-02 05:21:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:21:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 7454 transitions. [2023-04-02 05:21:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 05:21:27,620 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:27,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:27,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:21:27,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:27,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1386415822, now seen corresponding path program 1 times [2023-04-02 05:21:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201208405] [2023-04-02 05:21:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:27,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:21:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:21:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:21:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:21:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:21:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:21:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:21:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201208405] [2023-04-02 05:21:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201208405] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:28,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:28,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:21:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476912903] [2023-04-02 05:21:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:28,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:21:28,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:21:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:21:28,041 INFO L87 Difference]: Start difference. First operand 5226 states and 7454 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:21:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:30,577 INFO L93 Difference]: Finished difference Result 10296 states and 14730 transitions. [2023-04-02 05:21:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:21:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2023-04-02 05:21:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:30,592 INFO L225 Difference]: With dead ends: 10296 [2023-04-02 05:21:30,592 INFO L226 Difference]: Without dead ends: 6479 [2023-04-02 05:21:30,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:21:30,597 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 617 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:30,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 100 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:21:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2023-04-02 05:21:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 6399. [2023-04-02 05:21:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6399 states, 4840 states have (on average 1.425) internal successors, (6897), 4954 states have internal predecessors, (6897), 723 states have call successors, (723), 723 states have call predecessors, (723), 835 states have return successors, (1410), 721 states have call predecessors, (1410), 722 states have call successors, (1410) [2023-04-02 05:21:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6399 states to 6399 states and 9030 transitions. [2023-04-02 05:21:31,847 INFO L78 Accepts]: Start accepts. Automaton has 6399 states and 9030 transitions. Word has length 106 [2023-04-02 05:21:31,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:31,847 INFO L495 AbstractCegarLoop]: Abstraction has 6399 states and 9030 transitions. [2023-04-02 05:21:31,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:21:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 6399 states and 9030 transitions. [2023-04-02 05:21:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:21:31,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:31,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:31,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:21:31,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:31,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash -472946552, now seen corresponding path program 1 times [2023-04-02 05:21:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999218166] [2023-04-02 05:21:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:31,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:21:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:21:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:21:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:21:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:21:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:21:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:21:32,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:32,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999218166] [2023-04-02 05:21:32,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999218166] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:32,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27288401] [2023-04-02 05:21:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:32,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:32,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:32,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:21:32,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:21:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:32,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:21:32,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:21:34,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:34,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27288401] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:34,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:34,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [21] total 37 [2023-04-02 05:21:34,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608862844] [2023-04-02 05:21:34,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:34,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:21:34,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:21:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:34,425 INFO L87 Difference]: Start difference. First operand 6399 states and 9030 transitions. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-02 05:21:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:37,284 INFO L93 Difference]: Finished difference Result 11260 states and 15939 transitions. [2023-04-02 05:21:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:21:37,285 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 152 [2023-04-02 05:21:37,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:37,308 INFO L225 Difference]: With dead ends: 11260 [2023-04-02 05:21:37,309 INFO L226 Difference]: Without dead ends: 10377 [2023-04-02 05:21:37,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 05:21:37,313 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1611 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:37,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 851 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:21:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10377 states. [2023-04-02 05:21:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10377 to 10365. [2023-04-02 05:21:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10365 states, 7845 states have (on average 1.4276609305289993) internal successors, (11200), 8008 states have internal predecessors, (11200), 1179 states have call successors, (1179), 1179 states have call predecessors, (1179), 1340 states have return successors, (2298), 1177 states have call predecessors, (2298), 1178 states have call successors, (2298) [2023-04-02 05:21:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 14677 transitions. [2023-04-02 05:21:39,196 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 14677 transitions. Word has length 152 [2023-04-02 05:21:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:39,197 INFO L495 AbstractCegarLoop]: Abstraction has 10365 states and 14677 transitions. [2023-04-02 05:21:39,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-02 05:21:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 14677 transitions. [2023-04-02 05:21:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:21:39,200 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:39,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:39,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:21:39,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-02 05:21:39,408 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:39,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1781492472, now seen corresponding path program 1 times [2023-04-02 05:21:39,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:39,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4782110] [2023-04-02 05:21:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:39,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:21:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:21:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:21:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:21:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:21:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:21:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:21:40,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:40,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4782110] [2023-04-02 05:21:40,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4782110] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:40,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868647303] [2023-04-02 05:21:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:40,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:40,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:40,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:21:40,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:21:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:40,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:21:40,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:21:41,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:41,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868647303] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:41,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:41,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [21] total 36 [2023-04-02 05:21:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498663922] [2023-04-02 05:21:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:41,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 05:21:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 05:21:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 05:21:41,665 INFO L87 Difference]: Start difference. First operand 10365 states and 14677 transitions. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 05:21:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:45,137 INFO L93 Difference]: Finished difference Result 16739 states and 23752 transitions. [2023-04-02 05:21:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:21:45,137 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2023-04-02 05:21:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:45,175 INFO L225 Difference]: With dead ends: 16739 [2023-04-02 05:21:45,175 INFO L226 Difference]: Without dead ends: 14682 [2023-04-02 05:21:45,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 05:21:45,181 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 1469 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:45,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 799 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:21:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14682 states. [2023-04-02 05:21:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14682 to 14670. [2023-04-02 05:21:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14670 states, 11105 states have (on average 1.4305267897343539) internal successors, (15886), 11331 states have internal predecessors, (15886), 1670 states have call successors, (1670), 1670 states have call predecessors, (1670), 1894 states have return successors, (3269), 1668 states have call predecessors, (3269), 1669 states have call successors, (3269) [2023-04-02 05:21:47,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14670 states to 14670 states and 20825 transitions. [2023-04-02 05:21:47,930 INFO L78 Accepts]: Start accepts. Automaton has 14670 states and 20825 transitions. Word has length 152 [2023-04-02 05:21:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:47,930 INFO L495 AbstractCegarLoop]: Abstraction has 14670 states and 20825 transitions. [2023-04-02 05:21:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 05:21:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 14670 states and 20825 transitions. [2023-04-02 05:21:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:21:47,934 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:47,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:47,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:21:48,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-02 05:21:48,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:48,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1874727160, now seen corresponding path program 1 times [2023-04-02 05:21:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962219340] [2023-04-02 05:21:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:21:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:21:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:21:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:21:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:21:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:21:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:21:48,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:48,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962219340] [2023-04-02 05:21:48,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962219340] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:48,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831540231] [2023-04-02 05:21:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:48,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:48,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:48,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:21:48,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:21:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:49,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:21:49,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:21:50,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:50,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831540231] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:50,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:50,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [21] total 35 [2023-04-02 05:21:50,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764055696] [2023-04-02 05:21:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:50,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:21:50,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:50,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:21:50,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 05:21:50,231 INFO L87 Difference]: Start difference. First operand 14670 states and 20825 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:21:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:54,360 INFO L93 Difference]: Finished difference Result 21844 states and 31019 transitions. [2023-04-02 05:21:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:21:54,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2023-04-02 05:21:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:54,412 INFO L225 Difference]: With dead ends: 21844 [2023-04-02 05:21:54,412 INFO L226 Difference]: Without dead ends: 17768 [2023-04-02 05:21:54,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:54,427 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1521 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:54,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 774 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:21:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17768 states. [2023-04-02 05:21:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17768 to 17756. [2023-04-02 05:21:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17756 states, 13443 states have (on average 1.4315257011083835) internal successors, (19244), 13709 states have internal predecessors, (19244), 2024 states have call successors, (2024), 2024 states have call predecessors, (2024), 2288 states have return successors, (3968), 2022 states have call predecessors, (3968), 2023 states have call successors, (3968) [2023-04-02 05:21:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17756 states to 17756 states and 25236 transitions. [2023-04-02 05:21:57,684 INFO L78 Accepts]: Start accepts. Automaton has 17756 states and 25236 transitions. Word has length 152 [2023-04-02 05:21:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:57,684 INFO L495 AbstractCegarLoop]: Abstraction has 17756 states and 25236 transitions. [2023-04-02 05:21:57,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:21:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 17756 states and 25236 transitions. [2023-04-02 05:21:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:21:57,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:57,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:21:57,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 05:21:57,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:57,898 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:57,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1869756936, now seen corresponding path program 1 times [2023-04-02 05:21:57,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:57,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314750764] [2023-04-02 05:21:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:57,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:21:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:21:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:21:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:21:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:21:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:21:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:21:58,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:58,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314750764] [2023-04-02 05:21:58,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314750764] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:58,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919807143] [2023-04-02 05:21:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:58,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:58,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:58,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:21:58,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:21:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:21:58,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:21:59,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:59,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919807143] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:59,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:59,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [21] total 34 [2023-04-02 05:21:59,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020256714] [2023-04-02 05:21:59,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:59,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:21:59,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:59,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:21:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:21:59,989 INFO L87 Difference]: Start difference. First operand 17756 states and 25236 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:22:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:04,347 INFO L93 Difference]: Finished difference Result 26895 states and 38210 transitions. [2023-04-02 05:22:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:22:04,348 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 152 [2023-04-02 05:22:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:04,415 INFO L225 Difference]: With dead ends: 26895 [2023-04-02 05:22:04,415 INFO L226 Difference]: Without dead ends: 19683 [2023-04-02 05:22:04,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 05:22:04,439 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1291 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:04,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 726 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:22:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19683 states. [2023-04-02 05:22:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19683 to 19671. [2023-04-02 05:22:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19671 states, 14895 states have (on average 1.4317556226921786) internal successors, (21326), 15182 states have internal predecessors, (21326), 2245 states have call successors, (2245), 2245 states have call predecessors, (2245), 2530 states have return successors, (4403), 2243 states have call predecessors, (4403), 2244 states have call successors, (4403) [2023-04-02 05:22:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19671 states to 19671 states and 27974 transitions. [2023-04-02 05:22:08,169 INFO L78 Accepts]: Start accepts. Automaton has 19671 states and 27974 transitions. Word has length 152 [2023-04-02 05:22:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:08,169 INFO L495 AbstractCegarLoop]: Abstraction has 19671 states and 27974 transitions. [2023-04-02 05:22:08,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:22:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19671 states and 27974 transitions. [2023-04-02 05:22:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:22:08,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:08,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:22:08,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:22:08,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 05:22:08,380 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:08,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash 785418616, now seen corresponding path program 1 times [2023-04-02 05:22:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:08,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360512519] [2023-04-02 05:22:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:08,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:22:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:22:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:22:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:22:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:22:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:22:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:22:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:22:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:22:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:22:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:22:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 05:22:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:22:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:22:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 05:22:09,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:09,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360512519] [2023-04-02 05:22:09,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360512519] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:09,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:09,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:22:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623844455] [2023-04-02 05:22:09,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:09,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:22:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:22:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:22:09,212 INFO L87 Difference]: Start difference. First operand 19671 states and 27974 transitions. Second operand has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 15 states have internal predecessors, (96), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:22:32,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:32,984 INFO L93 Difference]: Finished difference Result 49531 states and 71009 transitions. [2023-04-02 05:22:32,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2023-04-02 05:22:32,984 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 15 states have internal predecessors, (96), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 152 [2023-04-02 05:22:32,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:33,112 INFO L225 Difference]: With dead ends: 49531 [2023-04-02 05:22:33,112 INFO L226 Difference]: Without dead ends: 33389 [2023-04-02 05:22:33,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23479 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=6949, Invalid=50891, Unknown=0, NotChecked=0, Total=57840 [2023-04-02 05:22:33,156 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 3134 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 8231 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 8606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 8231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:33,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 578 Invalid, 8606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 8231 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 05:22:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33389 states. [2023-04-02 05:22:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33389 to 32925. [2023-04-02 05:22:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32925 states, 24947 states have (on average 1.433559145388223) internal successors, (35763), 25364 states have internal predecessors, (35763), 3781 states have call successors, (3781), 3781 states have call predecessors, (3781), 4196 states have return successors, (7462), 3779 states have call predecessors, (7462), 3780 states have call successors, (7462) [2023-04-02 05:22:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32925 states to 32925 states and 47006 transitions. [2023-04-02 05:22:39,358 INFO L78 Accepts]: Start accepts. Automaton has 32925 states and 47006 transitions. Word has length 152 [2023-04-02 05:22:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:39,359 INFO L495 AbstractCegarLoop]: Abstraction has 32925 states and 47006 transitions. [2023-04-02 05:22:39,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 15 states have internal predecessors, (96), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:22:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 32925 states and 47006 transitions. [2023-04-02 05:22:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:22:39,363 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:39,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:22:39,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 05:22:39,364 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:39,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1752972936, now seen corresponding path program 1 times [2023-04-02 05:22:39,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:39,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152316261] [2023-04-02 05:22:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:39,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:22:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:22:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:22:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:22:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:22:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:22:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:22:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:22:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:22:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:22:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:22:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 05:22:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:22:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:22:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:22:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152316261] [2023-04-02 05:22:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152316261] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:22:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754979719] [2023-04-02 05:22:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:39,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:22:39,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:22:39,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:22:39,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:22:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:22:40,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:22:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:22:41,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:22:41,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754979719] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:41,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:22:41,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [21] total 33 [2023-04-02 05:22:41,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194246618] [2023-04-02 05:22:41,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:41,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:22:41,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:41,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:22:41,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:22:41,118 INFO L87 Difference]: Start difference. First operand 32925 states and 47006 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:22:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:47,865 INFO L93 Difference]: Finished difference Result 57301 states and 81846 transitions. [2023-04-02 05:22:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:22:47,865 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 152 [2023-04-02 05:22:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:47,946 INFO L225 Difference]: With dead ends: 57301 [2023-04-02 05:22:47,946 INFO L226 Difference]: Without dead ends: 32673 [2023-04-02 05:22:47,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:22:47,994 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1085 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:47,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1027 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:22:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32673 states. [2023-04-02 05:22:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32673 to 32651. [2023-04-02 05:22:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32651 states, 24741 states have (on average 1.4330463602926318) internal successors, (35455), 25156 states have internal predecessors, (35455), 3748 states have call successors, (3748), 3748 states have call predecessors, (3748), 4161 states have return successors, (7393), 3746 states have call predecessors, (7393), 3747 states have call successors, (7393) [2023-04-02 05:22:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32651 states to 32651 states and 46596 transitions. [2023-04-02 05:22:54,154 INFO L78 Accepts]: Start accepts. Automaton has 32651 states and 46596 transitions. Word has length 152 [2023-04-02 05:22:54,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:54,155 INFO L495 AbstractCegarLoop]: Abstraction has 32651 states and 46596 transitions. [2023-04-02 05:22:54,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:22:54,155 INFO L276 IsEmpty]: Start isEmpty. Operand 32651 states and 46596 transitions. [2023-04-02 05:22:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-02 05:22:54,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:54,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:22:54,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 05:22:54,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:22:54,366 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:54,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1626042957, now seen corresponding path program 1 times [2023-04-02 05:22:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:54,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001059253] [2023-04-02 05:22:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:54,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:22:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:22:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:22:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:22:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:22:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:22:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:22:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:22:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:22:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:22:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:22:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 05:22:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:22:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 05:22:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 05:22:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001059253] [2023-04-02 05:22:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001059253] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:22:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966822285] [2023-04-02 05:22:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:54,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:22:54,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:22:54,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:22:54,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 05:22:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:22:54,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:22:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:22:55,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:22:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:22:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966822285] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:22:55,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:22:55,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 22 [2023-04-02 05:22:55,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159227667] [2023-04-02 05:22:55,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:22:55,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:22:55,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:22:55,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:22:55,406 INFO L87 Difference]: Start difference. First operand 32651 states and 46596 transitions. Second operand has 22 states, 21 states have (on average 8.238095238095237) internal successors, (173), 14 states have internal predecessors, (173), 7 states have call successors, (49), 15 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) [2023-04-02 05:23:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:08,874 INFO L93 Difference]: Finished difference Result 83300 states and 119378 transitions. [2023-04-02 05:23:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-02 05:23:08,875 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 8.238095238095237) internal successors, (173), 14 states have internal predecessors, (173), 7 states have call successors, (49), 15 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) Word has length 153 [2023-04-02 05:23:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:09,010 INFO L225 Difference]: With dead ends: 83300 [2023-04-02 05:23:09,011 INFO L226 Difference]: Without dead ends: 50758 [2023-04-02 05:23:09,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=699, Invalid=2493, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:23:09,052 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2261 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:09,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 137 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:23:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50758 states. [2023-04-02 05:23:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50758 to 48093. [2023-04-02 05:23:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48093 states, 36231 states have (on average 1.4054262924015346) internal successors, (50920), 36992 states have internal predecessors, (50920), 5551 states have call successors, (5551), 5551 states have call predecessors, (5551), 6310 states have return successors, (10959), 5549 states have call predecessors, (10959), 5550 states have call successors, (10959) [2023-04-02 05:23:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48093 states to 48093 states and 67430 transitions. [2023-04-02 05:23:18,406 INFO L78 Accepts]: Start accepts. Automaton has 48093 states and 67430 transitions. Word has length 153 [2023-04-02 05:23:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:18,407 INFO L495 AbstractCegarLoop]: Abstraction has 48093 states and 67430 transitions. [2023-04-02 05:23:18,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 8.238095238095237) internal successors, (173), 14 states have internal predecessors, (173), 7 states have call successors, (49), 15 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) [2023-04-02 05:23:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 48093 states and 67430 transitions. [2023-04-02 05:23:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:23:18,410 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:18,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:23:18,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 05:23:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:23:18,611 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:18,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1301614267, now seen corresponding path program 1 times [2023-04-02 05:23:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:18,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779873418] [2023-04-02 05:23:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:18,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:23:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:23:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:23:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:23:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:23:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:23:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:23:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:23:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:23:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:23:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:23:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:23:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:23:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:23:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 05:23:18,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:18,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779873418] [2023-04-02 05:23:18,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779873418] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:23:18,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521943878] [2023-04-02 05:23:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:18,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:23:18,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:23:18,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:23:18,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 05:23:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:19,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:23:19,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:23:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:23:19,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:23:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:23:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521943878] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:23:19,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:23:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 22 [2023-04-02 05:23:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117555017] [2023-04-02 05:23:19,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:23:19,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:23:19,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:23:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:23:19,450 INFO L87 Difference]: Start difference. First operand 48093 states and 67430 transitions. Second operand has 22 states, 21 states have (on average 8.476190476190476) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (49), 16 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) [2023-04-02 05:23:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:41,678 INFO L93 Difference]: Finished difference Result 142890 states and 201698 transitions. [2023-04-02 05:23:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-02 05:23:41,678 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 8.476190476190476) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (49), 16 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) Word has length 155 [2023-04-02 05:23:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:42,162 INFO L225 Difference]: With dead ends: 142890 [2023-04-02 05:23:42,162 INFO L226 Difference]: Without dead ends: 94964 [2023-04-02 05:23:42,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:23:42,229 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2222 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:42,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 121 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:23:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94964 states.