/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:46:48,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:46:48,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:46:48,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:46:48,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:46:48,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:46:48,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:46:48,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:46:48,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:46:48,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:46:48,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:46:48,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:46:48,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:46:48,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:46:48,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:46:48,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:46:48,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:46:48,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:46:48,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:46:48,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:46:48,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:46:48,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:46:48,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:46:48,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:46:48,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:46:48,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:46:48,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:46:48,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:46:48,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:46:48,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:46:48,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:46:48,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:46:48,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:46:48,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:46:48,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:46:48,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:46:48,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:46:48,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:46:48,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:46:48,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:46:48,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:46:48,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:46:48,190 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:46:48,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:46:48,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:46:48,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:46:48,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:46:48,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:46:48,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:46:48,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:46:48,192 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:46:48,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:46:48,193 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:46:48,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:46:48,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:46:48,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:46:48,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:46:48,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:46:48,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:46:48,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:46:48,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:46:48,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:46:48,196 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:46:48,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:46:48,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:46:48,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:46:48,453 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:46:48,453 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:46:48,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-03-31 01:46:49,575 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:46:49,864 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:46:49,869 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-03-31 01:46:49,889 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e288976/5274735c304f4c8f8e3f7e3fbe27ba2a/FLAG2e8a07266 [2023-03-31 01:46:49,904 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e288976/5274735c304f4c8f8e3f7e3fbe27ba2a [2023-03-31 01:46:49,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:46:49,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:46:49,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:46:49,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:46:49,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:46:49,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:46:49" (1/1) ... [2023-03-31 01:46:49,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d30c1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:49, skipping insertion in model container [2023-03-31 01:46:49,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:46:49" (1/1) ... [2023-03-31 01:46:49,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:46:49,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:46:50,261 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2023-03-31 01:46:50,298 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2023-03-31 01:46:50,330 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2023-03-31 01:46:50,335 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2023-03-31 01:46:50,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:46:50,492 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:46:50,530 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2023-03-31 01:46:50,608 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2023-03-31 01:46:50,631 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2023-03-31 01:46:50,637 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2023-03-31 01:46:50,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:46:50,797 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:46:50,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50 WrapperNode [2023-03-31 01:46:50,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:46:50,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:46:50,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:46:50,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:46:50,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:46:50,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:46:50,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:46:50,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:46:50,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (1/1) ... [2023-03-31 01:46:50,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:46:50,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:46:50,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:46:50,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:46:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:46:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:46:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:46:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:46:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:46:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:46:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:46:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:46:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:46:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:46:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:46:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:46:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:46:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:46:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:46:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:46:51,273 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:46:51,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:46:52,604 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:46:52,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:46:52,614 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:46:52,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:46:52 BoogieIcfgContainer [2023-03-31 01:46:52,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:46:52,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:46:52,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:46:52,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:46:52,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:46:49" (1/3) ... [2023-03-31 01:46:52,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693fb287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:46:52, skipping insertion in model container [2023-03-31 01:46:52,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:50" (2/3) ... [2023-03-31 01:46:52,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693fb287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:46:52, skipping insertion in model container [2023-03-31 01:46:52,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:46:52" (3/3) ... [2023-03-31 01:46:52,624 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-03-31 01:46:52,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:46:52,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-03-31 01:46:52,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:46:52,696 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;@a4fe359, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:46:52,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-03-31 01:46:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 438 states have (on average 1.856164383561644) internal successors, (813), 442 states have internal predecessors, (813), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:46:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:46:52,718 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:52,718 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] [2023-03-31 01:46:52,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:52,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2031743305, now seen corresponding path program 1 times [2023-03-31 01:46:52,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:52,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368670986] [2023-03-31 01:46:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:52,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:53,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:53,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368670986] [2023-03-31 01:46:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368670986] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:53,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:53,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:46:53,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875412564] [2023-03-31 01:46:53,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:53,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:46:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:46:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:46:53,695 INFO L87 Difference]: Start difference. First operand has 447 states, 438 states have (on average 1.856164383561644) internal successors, (813), 442 states have internal predecessors, (813), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:56,533 INFO L93 Difference]: Finished difference Result 697 states and 1222 transitions. [2023-03-31 01:46:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:46:56,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:46:56,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:56,549 INFO L225 Difference]: With dead ends: 697 [2023-03-31 01:46:56,549 INFO L226 Difference]: Without dead ends: 550 [2023-03-31 01:46:56,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:46:56,555 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 426 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:56,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1370 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 01:46:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-03-31 01:46:56,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 544. [2023-03-31 01:46:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 1.3333333333333333) internal successors, (716), 540 states have internal predecessors, (716), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 719 transitions. [2023-03-31 01:46:56,636 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 719 transitions. Word has length 54 [2023-03-31 01:46:56,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:56,636 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 719 transitions. [2023-03-31 01:46:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 719 transitions. [2023-03-31 01:46:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:46:56,640 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:56,640 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] [2023-03-31 01:46:56,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:46:56,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:56,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:56,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1395254724, now seen corresponding path program 1 times [2023-03-31 01:46:56,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:56,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234440383] [2023-03-31 01:46:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:56,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:57,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:57,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234440383] [2023-03-31 01:46:57,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234440383] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:57,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:57,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:46:57,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708389160] [2023-03-31 01:46:57,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:57,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:46:57,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:46:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:46:57,102 INFO L87 Difference]: Start difference. First operand 544 states and 719 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:58,881 INFO L93 Difference]: Finished difference Result 959 states and 1321 transitions. [2023-03-31 01:46:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:46:58,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:46:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:58,885 INFO L225 Difference]: With dead ends: 959 [2023-03-31 01:46:58,885 INFO L226 Difference]: Without dead ends: 718 [2023-03-31 01:46:58,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:46:58,887 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 239 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:58,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1023 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:46:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-03-31 01:46:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 712. [2023-03-31 01:46:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 705 states have (on average 1.353191489361702) internal successors, (954), 708 states have internal predecessors, (954), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 957 transitions. [2023-03-31 01:46:58,930 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 957 transitions. Word has length 54 [2023-03-31 01:46:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:58,930 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 957 transitions. [2023-03-31 01:46:58,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 957 transitions. [2023-03-31 01:46:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:46:58,933 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:58,933 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] [2023-03-31 01:46:58,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:46:58,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:58,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash -584725883, now seen corresponding path program 1 times [2023-03-31 01:46:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:58,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305174225] [2023-03-31 01:46:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:58,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:59,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:59,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305174225] [2023-03-31 01:46:59,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305174225] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:59,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:59,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:46:59,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489373138] [2023-03-31 01:46:59,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:59,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:46:59,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:59,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:46:59,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:46:59,383 INFO L87 Difference]: Start difference. First operand 712 states and 957 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:01,491 INFO L93 Difference]: Finished difference Result 1368 states and 1892 transitions. [2023-03-31 01:47:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:01,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:47:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:01,496 INFO L225 Difference]: With dead ends: 1368 [2023-03-31 01:47:01,496 INFO L226 Difference]: Without dead ends: 1039 [2023-03-31 01:47:01,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:47:01,498 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 296 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:01,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1076 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:47:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-03-31 01:47:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2023-03-31 01:47:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1025 states have (on average 1.3639024390243903) internal successors, (1398), 1028 states have internal predecessors, (1398), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1401 transitions. [2023-03-31 01:47:01,551 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1401 transitions. Word has length 54 [2023-03-31 01:47:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:01,552 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1401 transitions. [2023-03-31 01:47:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1401 transitions. [2023-03-31 01:47:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:47:01,554 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:01,554 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] [2023-03-31 01:47:01,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:47:01,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:01,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash -690766814, now seen corresponding path program 1 times [2023-03-31 01:47:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:01,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779349354] [2023-03-31 01:47:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:01,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779349354] [2023-03-31 01:47:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779349354] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:02,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:02,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:47:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913414315] [2023-03-31 01:47:02,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:02,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:47:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:47:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:47:02,136 INFO L87 Difference]: Start difference. First operand 1032 states and 1401 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:03,907 INFO L93 Difference]: Finished difference Result 2121 states and 2924 transitions. [2023-03-31 01:47:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:47:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:47:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:03,913 INFO L225 Difference]: With dead ends: 2121 [2023-03-31 01:47:03,913 INFO L226 Difference]: Without dead ends: 1259 [2023-03-31 01:47:03,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:47:03,921 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1692 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:03,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 405 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:47:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-03-31 01:47:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1249. [2023-03-31 01:47:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1242 states have (on average 1.3735909822866346) internal successors, (1706), 1245 states have internal predecessors, (1706), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1709 transitions. [2023-03-31 01:47:04,009 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1709 transitions. Word has length 54 [2023-03-31 01:47:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:04,009 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1709 transitions. [2023-03-31 01:47:04,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1709 transitions. [2023-03-31 01:47:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-03-31 01:47:04,012 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:04,012 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] [2023-03-31 01:47:04,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:47:04,012 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:04,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash -137922686, now seen corresponding path program 1 times [2023-03-31 01:47:04,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:04,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319606983] [2023-03-31 01:47:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:04,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:04,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319606983] [2023-03-31 01:47:04,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319606983] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:04,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:04,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:47:04,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574643766] [2023-03-31 01:47:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:04,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:47:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:47:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:47:04,578 INFO L87 Difference]: Start difference. First operand 1249 states and 1709 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:06,329 INFO L93 Difference]: Finished difference Result 2676 states and 3696 transitions. [2023-03-31 01:47:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:47:06,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-03-31 01:47:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:06,337 INFO L225 Difference]: With dead ends: 2676 [2023-03-31 01:47:06,337 INFO L226 Difference]: Without dead ends: 1597 [2023-03-31 01:47:06,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:47:06,342 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1494 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:06,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 363 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2023-03-31 01:47:06,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1584. [2023-03-31 01:47:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1577 states have (on average 1.3677869372225746) internal successors, (2157), 1580 states have internal predecessors, (2157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2160 transitions. [2023-03-31 01:47:06,465 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2160 transitions. Word has length 55 [2023-03-31 01:47:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:06,466 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2160 transitions. [2023-03-31 01:47:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2160 transitions. [2023-03-31 01:47:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:47:06,468 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:06,468 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] [2023-03-31 01:47:06,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:47:06,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:06,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:06,470 INFO L85 PathProgramCache]: Analyzing trace with hash 839473038, now seen corresponding path program 1 times [2023-03-31 01:47:06,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:06,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176592213] [2023-03-31 01:47:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:06,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176592213] [2023-03-31 01:47:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176592213] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:07,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:07,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:47:07,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567030277] [2023-03-31 01:47:07,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:07,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:47:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:47:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:47:07,065 INFO L87 Difference]: Start difference. First operand 1584 states and 2160 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:09,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:09,415 INFO L93 Difference]: Finished difference Result 5117 states and 7169 transitions. [2023-03-31 01:47:09,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:47:09,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-03-31 01:47:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:09,436 INFO L225 Difference]: With dead ends: 5117 [2023-03-31 01:47:09,437 INFO L226 Difference]: Without dead ends: 4684 [2023-03-31 01:47:09,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:47:09,441 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 3309 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:09,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3309 Valid, 767 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:47:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2023-03-31 01:47:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 1596. [2023-03-31 01:47:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1589 states have (on average 1.3675267463813718) internal successors, (2173), 1592 states have internal predecessors, (2173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2176 transitions. [2023-03-31 01:47:09,661 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2176 transitions. Word has length 56 [2023-03-31 01:47:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:09,661 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2176 transitions. [2023-03-31 01:47:09,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2176 transitions. [2023-03-31 01:47:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:47:09,663 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:09,663 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] [2023-03-31 01:47:09,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:47:09,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:09,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash -206351210, now seen corresponding path program 1 times [2023-03-31 01:47:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:09,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678908827] [2023-03-31 01:47:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:10,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678908827] [2023-03-31 01:47:10,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678908827] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:10,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:10,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:47:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347022503] [2023-03-31 01:47:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:47:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:47:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:47:10,181 INFO L87 Difference]: Start difference. First operand 1596 states and 2176 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:11,797 INFO L93 Difference]: Finished difference Result 3492 states and 4805 transitions. [2023-03-31 01:47:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:47:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-03-31 01:47:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:11,805 INFO L225 Difference]: With dead ends: 3492 [2023-03-31 01:47:11,806 INFO L226 Difference]: Without dead ends: 2075 [2023-03-31 01:47:11,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:47:11,809 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1349 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:11,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 330 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:47:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-03-31 01:47:11,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1537. [2023-03-31 01:47:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1530 states have (on average 1.3640522875816994) internal successors, (2087), 1533 states have internal predecessors, (2087), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2090 transitions. [2023-03-31 01:47:11,981 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2090 transitions. Word has length 56 [2023-03-31 01:47:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:11,981 INFO L495 AbstractCegarLoop]: Abstraction has 1537 states and 2090 transitions. [2023-03-31 01:47:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2090 transitions. [2023-03-31 01:47:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:47:11,983 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:11,983 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] [2023-03-31 01:47:11,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:47:11,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:11,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 122553225, now seen corresponding path program 1 times [2023-03-31 01:47:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384208709] [2023-03-31 01:47:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:12,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384208709] [2023-03-31 01:47:12,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384208709] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:12,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:12,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:47:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806306955] [2023-03-31 01:47:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:12,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:47:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:47:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:47:12,571 INFO L87 Difference]: Start difference. First operand 1537 states and 2090 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:14,700 INFO L93 Difference]: Finished difference Result 5331 states and 7470 transitions. [2023-03-31 01:47:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:47:14,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-03-31 01:47:14,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:14,718 INFO L225 Difference]: With dead ends: 5331 [2023-03-31 01:47:14,718 INFO L226 Difference]: Without dead ends: 4781 [2023-03-31 01:47:14,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:47:14,721 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1987 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:14,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 729 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2023-03-31 01:47:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 1559. [2023-03-31 01:47:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1552 states have (on average 1.3646907216494846) internal successors, (2118), 1555 states have internal predecessors, (2118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2121 transitions. [2023-03-31 01:47:14,966 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2121 transitions. Word has length 57 [2023-03-31 01:47:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:14,966 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2121 transitions. [2023-03-31 01:47:14,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2121 transitions. [2023-03-31 01:47:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:47:14,968 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:14,968 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] [2023-03-31 01:47:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:47:14,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:14,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2122275156, now seen corresponding path program 1 times [2023-03-31 01:47:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699570038] [2023-03-31 01:47:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:15,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:15,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699570038] [2023-03-31 01:47:15,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699570038] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:15,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:15,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:47:15,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546849609] [2023-03-31 01:47:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:47:15,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:47:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:47:15,508 INFO L87 Difference]: Start difference. First operand 1559 states and 2121 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:17,414 INFO L93 Difference]: Finished difference Result 4990 states and 6918 transitions. [2023-03-31 01:47:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:47:17,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-03-31 01:47:17,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:17,428 INFO L225 Difference]: With dead ends: 4990 [2023-03-31 01:47:17,428 INFO L226 Difference]: Without dead ends: 4269 [2023-03-31 01:47:17,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:47:17,431 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 2600 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:17,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 597 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:47:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2023-03-31 01:47:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 1573. [2023-03-31 01:47:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1566 states have (on average 1.3639846743295019) internal successors, (2136), 1569 states have internal predecessors, (2136), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2139 transitions. [2023-03-31 01:47:17,686 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2139 transitions. Word has length 57 [2023-03-31 01:47:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:17,686 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2139 transitions. [2023-03-31 01:47:17,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2139 transitions. [2023-03-31 01:47:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:47:17,688 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:17,689 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] [2023-03-31 01:47:17,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:47:17,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:17,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1397005743, now seen corresponding path program 1 times [2023-03-31 01:47:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:17,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525122161] [2023-03-31 01:47:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525122161] [2023-03-31 01:47:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525122161] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:18,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:47:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425625140] [2023-03-31 01:47:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:18,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:47:18,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:47:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:47:18,456 INFO L87 Difference]: Start difference. First operand 1573 states and 2139 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:20,596 INFO L93 Difference]: Finished difference Result 4025 states and 5568 transitions. [2023-03-31 01:47:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:47:20,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:47:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:20,606 INFO L225 Difference]: With dead ends: 4025 [2023-03-31 01:47:20,606 INFO L226 Difference]: Without dead ends: 2975 [2023-03-31 01:47:20,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:47:20,609 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 2266 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:20,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2266 Valid, 885 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-03-31 01:47:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1573. [2023-03-31 01:47:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1566 states have (on average 1.3607918263090677) internal successors, (2131), 1569 states have internal predecessors, (2131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2134 transitions. [2023-03-31 01:47:20,871 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2134 transitions. Word has length 58 [2023-03-31 01:47:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:20,871 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2134 transitions. [2023-03-31 01:47:20,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2134 transitions. [2023-03-31 01:47:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:47:20,873 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:20,873 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] [2023-03-31 01:47:20,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:47:20,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:20,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -529036476, now seen corresponding path program 1 times [2023-03-31 01:47:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:20,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849937771] [2023-03-31 01:47:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:20,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:21,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:21,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:21,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849937771] [2023-03-31 01:47:21,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849937771] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:21,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:21,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:47:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638671662] [2023-03-31 01:47:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:21,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:47:21,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:47:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:47:21,558 INFO L87 Difference]: Start difference. First operand 1573 states and 2134 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:24,170 INFO L93 Difference]: Finished difference Result 5301 states and 7436 transitions. [2023-03-31 01:47:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:47:24,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:47:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:24,194 INFO L225 Difference]: With dead ends: 5301 [2023-03-31 01:47:24,195 INFO L226 Difference]: Without dead ends: 4379 [2023-03-31 01:47:24,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:47:24,199 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 2286 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:24,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2286 Valid, 1203 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:47:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2023-03-31 01:47:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 1544. [2023-03-31 01:47:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1537 states have (on average 1.3597918022121014) internal successors, (2090), 1540 states have internal predecessors, (2090), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2093 transitions. [2023-03-31 01:47:24,501 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2093 transitions. Word has length 58 [2023-03-31 01:47:24,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:24,502 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2093 transitions. [2023-03-31 01:47:24,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2093 transitions. [2023-03-31 01:47:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:47:24,504 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:24,504 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] [2023-03-31 01:47:24,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:47:24,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:24,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1583097060, now seen corresponding path program 1 times [2023-03-31 01:47:24,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:24,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537856630] [2023-03-31 01:47:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537856630] [2023-03-31 01:47:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537856630] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:25,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:25,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:47:25,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683978933] [2023-03-31 01:47:25,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:25,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:47:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:47:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:47:25,242 INFO L87 Difference]: Start difference. First operand 1544 states and 2093 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:27,669 INFO L93 Difference]: Finished difference Result 3572 states and 4967 transitions. [2023-03-31 01:47:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:47:27,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:47:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:27,676 INFO L225 Difference]: With dead ends: 3572 [2023-03-31 01:47:27,676 INFO L226 Difference]: Without dead ends: 3567 [2023-03-31 01:47:27,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:47:27,678 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 2198 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:27,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 1174 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:27,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2023-03-31 01:47:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 1544. [2023-03-31 01:47:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1537 states have (on average 1.3584905660377358) internal successors, (2088), 1540 states have internal predecessors, (2088), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2091 transitions. [2023-03-31 01:47:28,054 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2091 transitions. Word has length 58 [2023-03-31 01:47:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:28,054 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2091 transitions. [2023-03-31 01:47:28,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2091 transitions. [2023-03-31 01:47:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:47:28,057 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:28,057 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] [2023-03-31 01:47:28,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:47:28,058 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:28,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1620160278, now seen corresponding path program 1 times [2023-03-31 01:47:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:28,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148652597] [2023-03-31 01:47:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:28,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:28,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148652597] [2023-03-31 01:47:28,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148652597] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:28,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:28,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:28,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942294405] [2023-03-31 01:47:28,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:28,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:28,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:28,503 INFO L87 Difference]: Start difference. First operand 1544 states and 2091 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:29,940 INFO L93 Difference]: Finished difference Result 2201 states and 3006 transitions. [2023-03-31 01:47:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:29,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:47:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:29,943 INFO L225 Difference]: With dead ends: 2201 [2023-03-31 01:47:29,943 INFO L226 Difference]: Without dead ends: 1550 [2023-03-31 01:47:29,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:29,945 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 222 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:29,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 756 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:47:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-03-31 01:47:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1544. [2023-03-31 01:47:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1537 states have (on average 1.3454782042940794) internal successors, (2068), 1540 states have internal predecessors, (2068), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2071 transitions. [2023-03-31 01:47:30,219 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2071 transitions. Word has length 59 [2023-03-31 01:47:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:30,219 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2071 transitions. [2023-03-31 01:47:30,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2071 transitions. [2023-03-31 01:47:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:47:30,221 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:30,221 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] [2023-03-31 01:47:30,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:47:30,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:30,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:30,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1510403582, now seen corresponding path program 1 times [2023-03-31 01:47:30,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:30,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793791629] [2023-03-31 01:47:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:30,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793791629] [2023-03-31 01:47:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793791629] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:30,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:30,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:30,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827570099] [2023-03-31 01:47:30,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:30,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:30,669 INFO L87 Difference]: Start difference. First operand 1544 states and 2071 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:31,875 INFO L93 Difference]: Finished difference Result 2168 states and 2930 transitions. [2023-03-31 01:47:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:31,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:47:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:31,878 INFO L225 Difference]: With dead ends: 2168 [2023-03-31 01:47:31,878 INFO L226 Difference]: Without dead ends: 1551 [2023-03-31 01:47:31,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:31,880 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 206 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:31,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 749 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:47:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-03-31 01:47:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1544. [2023-03-31 01:47:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1537 states have (on average 1.3298633702016915) internal successors, (2044), 1540 states have internal predecessors, (2044), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2047 transitions. [2023-03-31 01:47:32,139 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2047 transitions. Word has length 59 [2023-03-31 01:47:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:32,139 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2047 transitions. [2023-03-31 01:47:32,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2047 transitions. [2023-03-31 01:47:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:47:32,142 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:32,142 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] [2023-03-31 01:47:32,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 01:47:32,143 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:32,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:32,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1342501814, now seen corresponding path program 1 times [2023-03-31 01:47:32,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:32,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729365660] [2023-03-31 01:47:32,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:32,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:32,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:32,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729365660] [2023-03-31 01:47:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729365660] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:32,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:32,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834687359] [2023-03-31 01:47:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:32,553 INFO L87 Difference]: Start difference. First operand 1544 states and 2047 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:33,847 INFO L93 Difference]: Finished difference Result 2072 states and 2742 transitions. [2023-03-31 01:47:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:33,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:47:33,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:33,850 INFO L225 Difference]: With dead ends: 2072 [2023-03-31 01:47:33,850 INFO L226 Difference]: Without dead ends: 1513 [2023-03-31 01:47:33,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:33,851 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 257 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:33,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 681 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:47:33,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2023-03-31 01:47:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1511. [2023-03-31 01:47:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1504 states have (on average 1.3018617021276595) internal successors, (1958), 1507 states have internal predecessors, (1958), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1961 transitions. [2023-03-31 01:47:34,163 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1961 transitions. Word has length 59 [2023-03-31 01:47:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:34,163 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 1961 transitions. [2023-03-31 01:47:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:34,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1961 transitions. [2023-03-31 01:47:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-03-31 01:47:34,165 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:34,165 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] [2023-03-31 01:47:34,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 01:47:34,165 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:34,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:34,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1995381971, now seen corresponding path program 1 times [2023-03-31 01:47:34,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:34,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682129483] [2023-03-31 01:47:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:34,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682129483] [2023-03-31 01:47:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682129483] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:34,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945278399] [2023-03-31 01:47:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:34,581 INFO L87 Difference]: Start difference. First operand 1511 states and 1961 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:35,949 INFO L93 Difference]: Finished difference Result 2669 states and 3503 transitions. [2023-03-31 01:47:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-03-31 01:47:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:35,952 INFO L225 Difference]: With dead ends: 2669 [2023-03-31 01:47:35,952 INFO L226 Difference]: Without dead ends: 1799 [2023-03-31 01:47:35,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:47:35,954 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 287 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:35,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 468 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:47:35,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2023-03-31 01:47:36,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1431. [2023-03-31 01:47:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1424 states have (on average 1.3026685393258426) internal successors, (1855), 1427 states have internal predecessors, (1855), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1858 transitions. [2023-03-31 01:47:36,213 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1858 transitions. Word has length 61 [2023-03-31 01:47:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:36,214 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1858 transitions. [2023-03-31 01:47:36,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1858 transitions. [2023-03-31 01:47:36,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-03-31 01:47:36,215 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:36,215 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] [2023-03-31 01:47:36,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 01:47:36,216 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:36,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash -314372005, now seen corresponding path program 1 times [2023-03-31 01:47:36,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:36,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702883436] [2023-03-31 01:47:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:36,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702883436] [2023-03-31 01:47:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702883436] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:36,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:36,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760438892] [2023-03-31 01:47:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:36,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:36,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:36,606 INFO L87 Difference]: Start difference. First operand 1431 states and 1858 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:37,893 INFO L93 Difference]: Finished difference Result 2533 states and 3319 transitions. [2023-03-31 01:47:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-03-31 01:47:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:37,897 INFO L225 Difference]: With dead ends: 2533 [2023-03-31 01:47:37,897 INFO L226 Difference]: Without dead ends: 1709 [2023-03-31 01:47:37,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:47:37,902 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 251 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:37,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 398 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:47:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2023-03-31 01:47:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1333. [2023-03-31 01:47:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1326 states have (on average 1.3054298642533937) internal successors, (1731), 1329 states have internal predecessors, (1731), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1734 transitions. [2023-03-31 01:47:38,253 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1734 transitions. Word has length 61 [2023-03-31 01:47:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1734 transitions. [2023-03-31 01:47:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1734 transitions. [2023-03-31 01:47:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-03-31 01:47:38,255 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:38,255 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] [2023-03-31 01:47:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-03-31 01:47:38,256 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:38,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1759222082, now seen corresponding path program 1 times [2023-03-31 01:47:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:38,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616258842] [2023-03-31 01:47:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:38,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616258842] [2023-03-31 01:47:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616258842] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:39,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:47:39,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629386835] [2023-03-31 01:47:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:47:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:47:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:47:39,255 INFO L87 Difference]: Start difference. First operand 1333 states and 1734 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)