/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:39:36,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:39:36,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:39:36,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:39:36,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:39:36,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:39:36,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:39:36,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:39:36,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:39:36,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:39:36,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:39:36,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:39:36,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:39:36,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:39:36,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:39:36,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:39:36,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:39:36,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:39:36,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:39:36,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:39:36,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:39:36,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:39:36,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:39:36,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:39:36,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:39:36,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:39:36,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:39:36,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:39:36,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:39:36,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:39:36,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:39:36,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:39:36,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:39:36,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:39:36,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:39:36,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:39:36,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:39:36,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:39:36,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:39:36,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:39:36,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:39:36,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:39:36,138 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:39:36,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:39:36,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:39:36,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:39:36,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:39:36,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:39:36,141 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:39:36,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:39:36,141 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:39:36,141 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:39:36,142 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:39:36,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:39:36,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:39:36,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:39:36,143 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:39:36,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:39:36,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:39:36,143 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:39:36,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:39:36,144 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:39:36,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:39:36,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:39:36,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:39:36,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:39:36,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:39:36,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:39:36,145 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:39:36,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:39:36,146 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:39:36,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:39:36,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:39:36,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:39:36,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:39:36,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:39:36,147 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:39:36,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:39:36,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:39:36,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:39:36,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:39:36,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:39:36,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:39:36,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:39:36,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:39:36,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:39:36,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:39:36,409 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:39:36,411 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:39:36,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-01 12:39:37,580 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:39:37,998 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:39:37,999 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-01 12:39:38,034 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b025b20/66226d7f7a3e4f0f880ea625332b7372/FLAG1fb38252c [2023-04-01 12:39:38,048 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b025b20/66226d7f7a3e4f0f880ea625332b7372 [2023-04-01 12:39:38,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:39:38,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:39:38,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:39:38,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:39:38,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:39:38,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:39:38" (1/1) ... [2023-04-01 12:39:38,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185d945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:38, skipping insertion in model container [2023-04-01 12:39:38,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:39:38" (1/1) ... [2023-04-01 12:39:38,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:39:38,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:39:38,489 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12458,12471] [2023-04-01 12:39:38,524 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19724,19737] [2023-04-01 12:39:38,535 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22076,22089] [2023-04-01 12:39:38,542 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23196,23209] [2023-04-01 12:39:38,560 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26746,26759] [2023-04-01 12:39:38,574 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27869,27882] [2023-04-01 12:39:38,582 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30184,30197] [2023-04-01 12:39:39,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:39:39,035 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:39:39,106 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12458,12471] [2023-04-01 12:39:39,124 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19724,19737] [2023-04-01 12:39:39,130 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22076,22089] [2023-04-01 12:39:39,133 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23196,23209] [2023-04-01 12:39:39,140 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26746,26759] [2023-04-01 12:39:39,143 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27869,27882] [2023-04-01 12:39:39,149 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.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30184,30197] [2023-04-01 12:39:39,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:39:39,371 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:39:39,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39 WrapperNode [2023-04-01 12:39:39,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:39:39,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:39:39,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:39:39,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:39:39,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:39:39,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:39:39,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:39:39,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:39:39,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (1/1) ... [2023-04-01 12:39:39,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:39:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:39:39,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:39:39,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:39:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:39:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:39:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:39:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:39:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 12:39:39,667 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:39:39,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:39:39,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:39:39,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:39:40,023 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:39:40,025 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:39:42,514 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:39:42,724 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:39:42,724 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 12:39:42,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:39:42 BoogieIcfgContainer [2023-04-01 12:39:42,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:39:42,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:39:42,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:39:42,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:39:42,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:39:38" (1/3) ... [2023-04-01 12:39:42,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e15076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:39:42, skipping insertion in model container [2023-04-01 12:39:42,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:39:39" (2/3) ... [2023-04-01 12:39:42,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e15076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:39:42, skipping insertion in model container [2023-04-01 12:39:42,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:39:42" (3/3) ... [2023-04-01 12:39:42,742 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-01 12:39:42,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:39:42,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-01 12:39:42,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:39:42,848 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=FINITE_AUTOMATA, 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;@f4ef949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:39:42,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-01 12:39:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 1053 states have (on average 1.8907882241215574) internal successors, (1991), 1060 states have internal predecessors, (1991), 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) [2023-04-01 12:39:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 12:39:42,887 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:42,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:42,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:42,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash -990909763, now seen corresponding path program 1 times [2023-04-01 12:39:42,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:42,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773897746] [2023-04-01 12:39:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:42,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:43,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:43,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773897746] [2023-04-01 12:39:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773897746] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:43,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:43,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:39:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087809161] [2023-04-01 12:39:43,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:43,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:39:43,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:39:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:39:43,826 INFO L87 Difference]: Start difference. First operand has 1065 states, 1053 states have (on average 1.8907882241215574) internal successors, (1991), 1060 states have internal predecessors, (1991), 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 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-04-01 12:39:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:44,695 INFO L93 Difference]: Finished difference Result 1675 states and 3059 transitions. [2023-04-01 12:39:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:39:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 67 [2023-04-01 12:39:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:44,711 INFO L225 Difference]: With dead ends: 1675 [2023-04-01 12:39:44,711 INFO L226 Difference]: Without dead ends: 926 [2023-04-01 12:39:44,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:39:44,720 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4638 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4638 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:44,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4638 Valid, 1187 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:39:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-04-01 12:39:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 918. [2023-04-01 12:39:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 908 states have (on average 1.303964757709251) internal successors, (1184), 914 states have internal predecessors, (1184), 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) [2023-04-01 12:39:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1187 transitions. [2023-04-01 12:39:44,804 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1187 transitions. Word has length 67 [2023-04-01 12:39:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:44,804 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1187 transitions. [2023-04-01 12:39:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-04-01 12:39:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1187 transitions. [2023-04-01 12:39:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 12:39:44,808 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:44,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:44,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:39:44,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:44,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash -385426605, now seen corresponding path program 1 times [2023-04-01 12:39:44,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:44,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747054247] [2023-04-01 12:39:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:44,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:45,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747054247] [2023-04-01 12:39:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747054247] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:45,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:45,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:39:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938432425] [2023-04-01 12:39:45,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:45,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:39:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:39:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:39:45,167 INFO L87 Difference]: Start difference. First operand 918 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:45,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:45,702 INFO L93 Difference]: Finished difference Result 1503 states and 1967 transitions. [2023-04-01 12:39:45,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:39:45,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 12:39:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:45,706 INFO L225 Difference]: With dead ends: 1503 [2023-04-01 12:39:45,706 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 12:39:45,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:39:45,709 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2803 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2803 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:45,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2803 Valid, 611 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:39:45,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 12:39:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1004. [2023-04-01 12:39:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 994 states have (on average 1.2857142857142858) internal successors, (1278), 1000 states have internal predecessors, (1278), 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) [2023-04-01 12:39:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1281 transitions. [2023-04-01 12:39:45,758 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1281 transitions. Word has length 68 [2023-04-01 12:39:45,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:45,758 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1281 transitions. [2023-04-01 12:39:45,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1281 transitions. [2023-04-01 12:39:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 12:39:45,761 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:45,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:45,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:39:45,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:45,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1878986256, now seen corresponding path program 1 times [2023-04-01 12:39:45,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:45,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338718789] [2023-04-01 12:39:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:45,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:45,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338718789] [2023-04-01 12:39:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338718789] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:39:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393042685] [2023-04-01 12:39:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:39:45,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:39:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:45,947 INFO L87 Difference]: Start difference. First operand 1004 states and 1281 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:46,166 INFO L93 Difference]: Finished difference Result 1693 states and 2253 transitions. [2023-04-01 12:39:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:39:46,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 12:39:46,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:46,171 INFO L225 Difference]: With dead ends: 1693 [2023-04-01 12:39:46,172 INFO L226 Difference]: Without dead ends: 1354 [2023-04-01 12:39:46,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:46,173 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 470 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:46,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1414 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:39:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-04-01 12:39:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1346. [2023-04-01 12:39:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1336 states have (on average 1.3173652694610778) internal successors, (1760), 1342 states have internal predecessors, (1760), 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) [2023-04-01 12:39:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1763 transitions. [2023-04-01 12:39:46,265 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1763 transitions. Word has length 68 [2023-04-01 12:39:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:46,265 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 1763 transitions. [2023-04-01 12:39:46,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1763 transitions. [2023-04-01 12:39:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 12:39:46,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:46,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:46,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:39:46,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:46,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2144479579, now seen corresponding path program 1 times [2023-04-01 12:39:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:46,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363397531] [2023-04-01 12:39:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:46,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:46,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363397531] [2023-04-01 12:39:46,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363397531] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:46,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:46,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:39:46,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405595500] [2023-04-01 12:39:46,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:46,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:39:46,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:39:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:46,405 INFO L87 Difference]: Start difference. First operand 1346 states and 1763 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:46,629 INFO L93 Difference]: Finished difference Result 2688 states and 3628 transitions. [2023-04-01 12:39:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:39:46,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 12:39:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:46,637 INFO L225 Difference]: With dead ends: 2688 [2023-04-01 12:39:46,637 INFO L226 Difference]: Without dead ends: 1951 [2023-04-01 12:39:46,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:46,640 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 452 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:46,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1464 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:39:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2023-04-01 12:39:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1943. [2023-04-01 12:39:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1933 states have (on average 1.3331608898085876) internal successors, (2577), 1939 states have internal predecessors, (2577), 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) [2023-04-01 12:39:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2580 transitions. [2023-04-01 12:39:46,791 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2580 transitions. Word has length 68 [2023-04-01 12:39:46,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:46,792 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 2580 transitions. [2023-04-01 12:39:46,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2580 transitions. [2023-04-01 12:39:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 12:39:46,795 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:46,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:46,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:39:46,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:46,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1717073860, now seen corresponding path program 1 times [2023-04-01 12:39:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:46,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38972872] [2023-04-01 12:39:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:46,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:46,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:46,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38972872] [2023-04-01 12:39:46,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38972872] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:46,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:46,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:39:46,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105376359] [2023-04-01 12:39:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:39:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:39:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:46,964 INFO L87 Difference]: Start difference. First operand 1943 states and 2580 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:47,298 INFO L93 Difference]: Finished difference Result 4258 states and 5762 transitions. [2023-04-01 12:39:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:39:47,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 12:39:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:47,311 INFO L225 Difference]: With dead ends: 4258 [2023-04-01 12:39:47,311 INFO L226 Difference]: Without dead ends: 3085 [2023-04-01 12:39:47,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:47,316 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 723 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:47,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1728 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:39:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2023-04-01 12:39:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3077. [2023-04-01 12:39:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3067 states have (on average 1.3338767525268993) internal successors, (4091), 3073 states have internal predecessors, (4091), 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) [2023-04-01 12:39:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4094 transitions. [2023-04-01 12:39:47,626 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4094 transitions. Word has length 68 [2023-04-01 12:39:47,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:47,626 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4094 transitions. [2023-04-01 12:39:47,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4094 transitions. [2023-04-01 12:39:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 12:39:47,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:47,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:47,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:39:47,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:47,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2013950252, now seen corresponding path program 1 times [2023-04-01 12:39:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465292780] [2023-04-01 12:39:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:47,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465292780] [2023-04-01 12:39:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465292780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:39:47,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547426733] [2023-04-01 12:39:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:47,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:39:47,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:39:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:39:47,857 INFO L87 Difference]: Start difference. First operand 3077 states and 4094 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:48,777 INFO L93 Difference]: Finished difference Result 7224 states and 9809 transitions. [2023-04-01 12:39:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:39:48,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 12:39:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:48,795 INFO L225 Difference]: With dead ends: 7224 [2023-04-01 12:39:48,795 INFO L226 Difference]: Without dead ends: 4586 [2023-04-01 12:39:48,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:39:48,806 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2487 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:48,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 585 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:39:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2023-04-01 12:39:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4578. [2023-04-01 12:39:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4568 states have (on average 1.3526707530647986) internal successors, (6179), 4574 states have internal predecessors, (6179), 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) [2023-04-01 12:39:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6182 transitions. [2023-04-01 12:39:49,356 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6182 transitions. Word has length 68 [2023-04-01 12:39:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:49,356 INFO L495 AbstractCegarLoop]: Abstraction has 4578 states and 6182 transitions. [2023-04-01 12:39:49,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6182 transitions. [2023-04-01 12:39:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 12:39:49,378 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:49,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:39:49,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:49,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:49,379 INFO L85 PathProgramCache]: Analyzing trace with hash 593424523, now seen corresponding path program 1 times [2023-04-01 12:39:49,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:49,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366507678] [2023-04-01 12:39:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:49,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:49,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:49,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366507678] [2023-04-01 12:39:49,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366507678] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:49,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:49,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:39:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673254117] [2023-04-01 12:39:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:39:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:39:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:39:49,553 INFO L87 Difference]: Start difference. First operand 4578 states and 6182 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:50,724 INFO L93 Difference]: Finished difference Result 12187 states and 16668 transitions. [2023-04-01 12:39:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:39:50,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-01 12:39:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:50,753 INFO L225 Difference]: With dead ends: 12187 [2023-04-01 12:39:50,753 INFO L226 Difference]: Without dead ends: 7835 [2023-04-01 12:39:50,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:39:50,763 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 2055 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:50,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 530 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:39:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7835 states. [2023-04-01 12:39:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7835 to 7827. [2023-04-01 12:39:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7827 states, 7817 states have (on average 1.356658564666752) internal successors, (10605), 7823 states have internal predecessors, (10605), 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) [2023-04-01 12:39:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7827 states to 7827 states and 10608 transitions. [2023-04-01 12:39:51,582 INFO L78 Accepts]: Start accepts. Automaton has 7827 states and 10608 transitions. Word has length 69 [2023-04-01 12:39:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:51,582 INFO L495 AbstractCegarLoop]: Abstraction has 7827 states and 10608 transitions. [2023-04-01 12:39:51,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7827 states and 10608 transitions. [2023-04-01 12:39:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 12:39:51,592 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:51,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:51,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:39:51,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:51,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1498451088, now seen corresponding path program 1 times [2023-04-01 12:39:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373215620] [2023-04-01 12:39:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:51,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:51,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:51,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373215620] [2023-04-01 12:39:51,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373215620] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:51,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:51,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:39:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558951559] [2023-04-01 12:39:51,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:51,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:39:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:39:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:51,710 INFO L87 Difference]: Start difference. First operand 7827 states and 10608 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:39:53,037 INFO L93 Difference]: Finished difference Result 20108 states and 27366 transitions. [2023-04-01 12:39:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:39:53,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-01 12:39:53,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:39:53,083 INFO L225 Difference]: With dead ends: 20108 [2023-04-01 12:39:53,083 INFO L226 Difference]: Without dead ends: 13259 [2023-04-01 12:39:53,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:39:53,100 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 468 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:39:53,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1199 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:39:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13259 states. [2023-04-01 12:39:54,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 13251. [2023-04-01 12:39:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13241 states have (on average 1.3452156181557284) internal successors, (17812), 13247 states have internal predecessors, (17812), 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) [2023-04-01 12:39:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 17815 transitions. [2023-04-01 12:39:54,611 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 17815 transitions. Word has length 70 [2023-04-01 12:39:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:39:54,612 INFO L495 AbstractCegarLoop]: Abstraction has 13251 states and 17815 transitions. [2023-04-01 12:39:54,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:39:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 17815 transitions. [2023-04-01 12:39:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 12:39:54,620 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:39:54,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:39:54,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:39:54,621 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:39:54,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:39:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash 248095378, now seen corresponding path program 1 times [2023-04-01 12:39:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:39:54,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335285709] [2023-04-01 12:39:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:39:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:39:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:39:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:39:54,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:39:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335285709] [2023-04-01 12:39:54,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335285709] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:39:54,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:39:54,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:39:54,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403763029] [2023-04-01 12:39:54,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:39:54,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:39:54,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:39:54,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:39:54,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:39:54,845 INFO L87 Difference]: Start difference. First operand 13251 states and 17815 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:00,366 INFO L93 Difference]: Finished difference Result 51554 states and 69270 transitions. [2023-04-01 12:40:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 12:40:00,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-01 12:40:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:00,512 INFO L225 Difference]: With dead ends: 51554 [2023-04-01 12:40:00,512 INFO L226 Difference]: Without dead ends: 45753 [2023-04-01 12:40:00,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 12:40:00,543 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 3772 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:00,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3772 Valid, 911 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:40:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45753 states. [2023-04-01 12:40:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45753 to 13279. [2023-04-01 12:40:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13279 states, 13269 states have (on average 1.3450900595372672) internal successors, (17848), 13275 states have internal predecessors, (17848), 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) [2023-04-01 12:40:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13279 states to 13279 states and 17851 transitions. [2023-04-01 12:40:02,884 INFO L78 Accepts]: Start accepts. Automaton has 13279 states and 17851 transitions. Word has length 71 [2023-04-01 12:40:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:02,884 INFO L495 AbstractCegarLoop]: Abstraction has 13279 states and 17851 transitions. [2023-04-01 12:40:02,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 13279 states and 17851 transitions. [2023-04-01 12:40:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 12:40:02,893 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:02,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:40:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:40:02,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:40:02,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash 789562272, now seen corresponding path program 1 times [2023-04-01 12:40:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045219821] [2023-04-01 12:40:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:40:03,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045219821] [2023-04-01 12:40:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045219821] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:03,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:40:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817691371] [2023-04-01 12:40:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:03,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:40:03,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:03,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:40:03,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:40:03,130 INFO L87 Difference]: Start difference. First operand 13279 states and 17851 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:11,902 INFO L93 Difference]: Finished difference Result 56295 states and 76105 transitions. [2023-04-01 12:40:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 12:40:11,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-01 12:40:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:12,072 INFO L225 Difference]: With dead ends: 56295 [2023-04-01 12:40:12,072 INFO L226 Difference]: Without dead ends: 50937 [2023-04-01 12:40:12,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 12:40:12,101 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2889 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:12,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 1033 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:40:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50937 states. [2023-04-01 12:40:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50937 to 13350. [2023-04-01 12:40:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13350 states, 13340 states have (on average 1.345352323838081) internal successors, (17947), 13346 states have internal predecessors, (17947), 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) [2023-04-01 12:40:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13350 states to 13350 states and 17950 transitions. [2023-04-01 12:40:14,542 INFO L78 Accepts]: Start accepts. Automaton has 13350 states and 17950 transitions. Word has length 71 [2023-04-01 12:40:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:14,542 INFO L495 AbstractCegarLoop]: Abstraction has 13350 states and 17950 transitions. [2023-04-01 12:40:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13350 states and 17950 transitions. [2023-04-01 12:40:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 12:40:14,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:14,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:40:14,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 12:40:14,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:40:14,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash 114666909, now seen corresponding path program 1 times [2023-04-01 12:40:14,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:14,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626072073] [2023-04-01 12:40:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:14,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:40:14,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:14,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626072073] [2023-04-01 12:40:14,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626072073] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:14,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:14,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:40:14,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082483707] [2023-04-01 12:40:14,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:14,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:40:14,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:40:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:40:14,791 INFO L87 Difference]: Start difference. First operand 13350 states and 17950 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:40:27,248 INFO L93 Difference]: Finished difference Result 70618 states and 96252 transitions. [2023-04-01 12:40:27,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 12:40:27,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-01 12:40:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:40:27,388 INFO L225 Difference]: With dead ends: 70618 [2023-04-01 12:40:27,388 INFO L226 Difference]: Without dead ends: 64822 [2023-04-01 12:40:27,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 12:40:27,423 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 4164 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4164 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:40:27,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4164 Valid, 956 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 12:40:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64822 states. [2023-04-01 12:40:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64822 to 13418. [2023-04-01 12:40:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13408 states have (on average 1.3450924821002386) internal successors, (18035), 13414 states have internal predecessors, (18035), 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) [2023-04-01 12:40:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 18038 transitions. [2023-04-01 12:40:30,445 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 18038 transitions. Word has length 71 [2023-04-01 12:40:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:40:30,446 INFO L495 AbstractCegarLoop]: Abstraction has 13418 states and 18038 transitions. [2023-04-01 12:40:30,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:40:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 18038 transitions. [2023-04-01 12:40:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 12:40:30,454 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:40:30,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:40:30,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 12:40:30,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 12:40:30,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:40:30,455 INFO L85 PathProgramCache]: Analyzing trace with hash -842134178, now seen corresponding path program 1 times [2023-04-01 12:40:30,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:40:30,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769073983] [2023-04-01 12:40:30,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:40:30,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:40:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:40:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:40:30,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:40:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769073983] [2023-04-01 12:40:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769073983] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:40:30,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:40:30,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:40:30,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001725967] [2023-04-01 12:40:30,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:40:30,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:40:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:40:30,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:40:30,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:40:30,662 INFO L87 Difference]: Start difference. First operand 13418 states and 18038 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)