/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 OctagonDomain -i ../sv-benchmarks/c/systemc/token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:25:52,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:25:52,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:25:52,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:25:52,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:25:52,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:25:52,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:25:52,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:25:52,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:25:52,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:25:52,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:25:52,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:25:52,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:25:52,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:25:52,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:25:52,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:25:52,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:25:52,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:25:52,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:25:52,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:25:52,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:25:52,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:25:52,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:25:52,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:25:52,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:25:52,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:25:52,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:25:52,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:25:52,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:25:52,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:25:52,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:25:52,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:25:52,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:25:52,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:25:52,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:25:52,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:25:52,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:25:52,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:25:52,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:25:52,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:25:52,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:25:52,186 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 [2023-04-03 01:25:52,206 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:25:52,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:25:52,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:25:52,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:25:52,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:25:52,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:25:52,207 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:25:52,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:25:52,208 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:25:52,208 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:25:52,208 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:25:52,208 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:25:52,208 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:25:52,208 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:25:52,208 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:25:52,209 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:25:52,209 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:25:52,209 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:25:52,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:25:52,209 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:25:52,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:25:52,210 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:25:52,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:25:52,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:25:52,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:25:52,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:25:52,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:25:52,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:25:52,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:25:52,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:25:52,212 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:25:52,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:25:52,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:25:52,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:25:52,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:25:52,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:25:52,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:25:52,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:25:52,427 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:25:52,427 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:25:52,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2023-04-03 01:25:53,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:25:53,828 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:25:53,828 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2023-04-03 01:25:53,842 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915e4f515/e81eae791e574317a2c063d1235f235d/FLAG8ef2a6265 [2023-04-03 01:25:53,857 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/915e4f515/e81eae791e574317a2c063d1235f235d [2023-04-03 01:25:53,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:25:53,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:25:53,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:25:53,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:25:53,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:25:53,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:25:53" (1/1) ... [2023-04-03 01:25:53,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47598b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:53, skipping insertion in model container [2023-04-03 01:25:53,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:25:53" (1/1) ... [2023-04-03 01:25:53,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:25:53,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:25:54,016 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.09.cil-1.c[671,684] [2023-04-03 01:25:54,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:25:54,117 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:25:54,125 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/systemc/token_ring.09.cil-1.c[671,684] [2023-04-03 01:25:54,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:25:54,200 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:25:54,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54 WrapperNode [2023-04-03 01:25:54,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:25:54,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:25:54,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:25:54,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:25:54,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:25:54,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:25:54,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:25:54,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:25:54,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (1/1) ... [2023-04-03 01:25:54,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:25:54,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:25:54,344 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) [2023-04-03 01:25:54,346 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 [2023-04-03 01:25:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:25:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2023-04-03 01:25:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit5 [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit6 [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit7 [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit8 [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit9 [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2023-04-03 01:25:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit5_triggered [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit6_triggered [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit7_triggered [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit8_triggered [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit9_triggered [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-04-03 01:25:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-03 01:25:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2023-04-03 01:25:54,376 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit5_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit6_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit7_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit8_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit9_triggered [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:25:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure master [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit5 [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit6 [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit7 [2023-04-03 01:25:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure transmit8 [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure transmit9 [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-04-03 01:25:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:25:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:25:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:25:54,481 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:25:54,483 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:25:55,118 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:25:55,456 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:25:55,456 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-04-03 01:25:55,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:25:55 BoogieIcfgContainer [2023-04-03 01:25:55,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:25:55,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:25:55,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:25:55,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:25:55,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:25:53" (1/3) ... [2023-04-03 01:25:55,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7ac525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:25:55, skipping insertion in model container [2023-04-03 01:25:55,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:25:54" (2/3) ... [2023-04-03 01:25:55,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7ac525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:25:55, skipping insertion in model container [2023-04-03 01:25:55,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:25:55" (3/3) ... [2023-04-03 01:25:55,472 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2023-04-03 01:25:55,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:25:55,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:25:55,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:25:55,552 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;@74fec25e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:25:55,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:25:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 153 states have (on average 1.4444444444444444) internal successors, (221), 167 states have internal predecessors, (221), 53 states have call successors, (53), 36 states have call predecessors, (53), 36 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-04-03 01:25:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 01:25:55,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:25:55,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:25:55,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:25:55,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:25:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1238101312, now seen corresponding path program 1 times [2023-04-03 01:25:55,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:25:55,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664403250] [2023-04-03 01:25:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:25:55,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:25:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:25:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:25:56,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:25:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664403250] [2023-04-03 01:25:56,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664403250] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:25:56,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:25:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 01:25:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792544222] [2023-04-03 01:25:56,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:25:56,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 01:25:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:25:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 01:25:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:25:56,357 INFO L87 Difference]: Start difference. First operand has 244 states, 153 states have (on average 1.4444444444444444) internal successors, (221), 167 states have internal predecessors, (221), 53 states have call successors, (53), 36 states have call predecessors, (53), 36 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-03 01:25:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:25:57,021 INFO L93 Difference]: Finished difference Result 689 states and 982 transitions. [2023-04-03 01:25:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 01:25:57,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 112 [2023-04-03 01:25:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:25:57,043 INFO L225 Difference]: With dead ends: 689 [2023-04-03 01:25:57,043 INFO L226 Difference]: Without dead ends: 449 [2023-04-03 01:25:57,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:25:57,059 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 574 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:25:57,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 822 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 01:25:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-04-03 01:25:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 448. [2023-04-03 01:25:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 289 states have (on average 1.4083044982698962) internal successors, (407), 312 states have internal predecessors, (407), 96 states have call successors, (96), 66 states have call predecessors, (96), 62 states have return successors, (94), 91 states have call predecessors, (94), 93 states have call successors, (94) [2023-04-03 01:25:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 597 transitions. [2023-04-03 01:25:57,167 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 597 transitions. Word has length 112 [2023-04-03 01:25:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:25:57,168 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 597 transitions. [2023-04-03 01:25:57,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-03 01:25:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 597 transitions. [2023-04-03 01:25:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-04-03 01:25:57,179 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:25:57,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:25:57,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:25:57,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:25:57,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:25:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1171705969, now seen corresponding path program 1 times [2023-04-03 01:25:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:25:57,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218739450] [2023-04-03 01:25:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:25:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:25:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:25:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-04-03 01:25:57,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:25:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218739450] [2023-04-03 01:25:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218739450] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:25:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891296892] [2023-04-03 01:25:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:25:57,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:25:57,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:25:57,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:25:57,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:25:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:25:58,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-03 01:25:58,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:25:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:25:58,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:25:58,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891296892] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:25:58,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:25:58,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-03 01:25:58,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108983038] [2023-04-03 01:25:58,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:25:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:25:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:25:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:25:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:25:58,212 INFO L87 Difference]: Start difference. First operand 448 states and 597 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-04-03 01:25:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:25:58,323 INFO L93 Difference]: Finished difference Result 768 states and 1051 transitions. [2023-04-03 01:25:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:25:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 211 [2023-04-03 01:25:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:25:58,328 INFO L225 Difference]: With dead ends: 768 [2023-04-03 01:25:58,328 INFO L226 Difference]: Without dead ends: 548 [2023-04-03 01:25:58,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:25:58,330 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 122 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:25:58,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 669 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:25:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-04-03 01:25:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 518. [2023-04-03 01:25:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 339 states have (on average 1.4572271386430677) internal successors, (494), 371 states have internal predecessors, (494), 106 states have call successors, (106), 76 states have call predecessors, (106), 72 states have return successors, (113), 101 states have call predecessors, (113), 103 states have call successors, (113) [2023-04-03 01:25:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 713 transitions. [2023-04-03 01:25:58,365 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 713 transitions. Word has length 211 [2023-04-03 01:25:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:25:58,366 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 713 transitions. [2023-04-03 01:25:58,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-04-03 01:25:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 713 transitions. [2023-04-03 01:25:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:25:58,371 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:25:58,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:25:58,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 01:25:58,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:25:58,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:25:58,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:25:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash -80808551, now seen corresponding path program 1 times [2023-04-03 01:25:58,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:25:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583162025] [2023-04-03 01:25:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:25:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:25:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:25:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-04-03 01:25:59,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:25:59,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583162025] [2023-04-03 01:25:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583162025] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:25:59,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491257914] [2023-04-03 01:25:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:25:59,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:25:59,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:25:59,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:25:59,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 01:25:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:25:59,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 01:25:59,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:25:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:25:59,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:25:59,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491257914] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:25:59,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:25:59,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-03 01:25:59,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975222792] [2023-04-03 01:25:59,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:25:59,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:25:59,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:25:59,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:25:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:25:59,715 INFO L87 Difference]: Start difference. First operand 518 states and 713 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:25:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:25:59,894 INFO L93 Difference]: Finished difference Result 1511 states and 2210 transitions. [2023-04-03 01:25:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:25:59,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294 [2023-04-03 01:25:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:25:59,906 INFO L225 Difference]: With dead ends: 1511 [2023-04-03 01:25:59,906 INFO L226 Difference]: Without dead ends: 1010 [2023-04-03 01:25:59,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:25:59,913 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 245 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:25:59,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 706 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:25:59,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-04-03 01:26:00,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1002. [2023-04-03 01:26:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 663 states have (on average 1.4524886877828054) internal successors, (963), 723 states have internal predecessors, (963), 200 states have call successors, (200), 145 states have call predecessors, (200), 138 states have return successors, (272), 192 states have call predecessors, (272), 197 states have call successors, (272) [2023-04-03 01:26:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1435 transitions. [2023-04-03 01:26:00,013 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1435 transitions. Word has length 294 [2023-04-03 01:26:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:00,014 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1435 transitions. [2023-04-03 01:26:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1435 transitions. [2023-04-03 01:26:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:00,020 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:00,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:00,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:00,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-03 01:26:00,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:00,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1337420280, now seen corresponding path program 1 times [2023-04-03 01:26:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061135421] [2023-04-03 01:26:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:00,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-04-03 01:26:00,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:00,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061135421] [2023-04-03 01:26:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061135421] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:00,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111388067] [2023-04-03 01:26:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:00,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:00,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:00,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-03 01:26:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:01,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-03 01:26:01,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-04-03 01:26:01,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:01,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111388067] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:01,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:01,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-03 01:26:01,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902824515] [2023-04-03 01:26:01,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:01,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:01,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:01,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:01,243 INFO L87 Difference]: Start difference. First operand 1002 states and 1435 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 3 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2023-04-03 01:26:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:01,444 INFO L93 Difference]: Finished difference Result 2954 states and 4409 transitions. [2023-04-03 01:26:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:01,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 3 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 294 [2023-04-03 01:26:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:01,458 INFO L225 Difference]: With dead ends: 2954 [2023-04-03 01:26:01,458 INFO L226 Difference]: Without dead ends: 1968 [2023-04-03 01:26:01,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:01,465 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 234 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:01,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 556 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2023-04-03 01:26:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1959. [2023-04-03 01:26:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1306 states have (on average 1.448698315467075) internal successors, (1892), 1419 states have internal predecessors, (1892), 385 states have call successors, (385), 284 states have call predecessors, (385), 267 states have return successors, (533), 365 states have call predecessors, (533), 382 states have call successors, (533) [2023-04-03 01:26:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2810 transitions. [2023-04-03 01:26:01,588 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2810 transitions. Word has length 294 [2023-04-03 01:26:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:01,588 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2810 transitions. [2023-04-03 01:26:01,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 3 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2023-04-03 01:26:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2810 transitions. [2023-04-03 01:26:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:01,597 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:01,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:01,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:01,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:01,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:01,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash 225554040, now seen corresponding path program 1 times [2023-04-03 01:26:01,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:01,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401053174] [2023-04-03 01:26:01,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-04-03 01:26:02,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401053174] [2023-04-03 01:26:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401053174] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721480886] [2023-04-03 01:26:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:02,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:02,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:02,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:02,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-03 01:26:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:02,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-03 01:26:02,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-04-03 01:26:02,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721480886] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:02,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-03 01:26:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673795423] [2023-04-03 01:26:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:02,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:02,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:02,701 INFO L87 Difference]: Start difference. First operand 1959 states and 2810 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-03 01:26:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:02,979 INFO L93 Difference]: Finished difference Result 5807 states and 8683 transitions. [2023-04-03 01:26:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:02,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 294 [2023-04-03 01:26:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:03,003 INFO L225 Difference]: With dead ends: 5807 [2023-04-03 01:26:03,003 INFO L226 Difference]: Without dead ends: 3864 [2023-04-03 01:26:03,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:03,016 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 262 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:03,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 535 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2023-04-03 01:26:03,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3849. [2023-04-03 01:26:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2578 states have (on average 1.4437548487199379) internal successors, (3722), 2791 states have internal predecessors, (3722), 751 states have call successors, (751), 562 states have call predecessors, (751), 519 states have return successors, (1062), 701 states have call predecessors, (1062), 748 states have call successors, (1062) [2023-04-03 01:26:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5535 transitions. [2023-04-03 01:26:03,336 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5535 transitions. Word has length 294 [2023-04-03 01:26:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:03,336 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 5535 transitions. [2023-04-03 01:26:03,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-03 01:26:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5535 transitions. [2023-04-03 01:26:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:03,356 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:03,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:03,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:03,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:03,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:03,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 695345369, now seen corresponding path program 1 times [2023-04-03 01:26:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:03,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692999894] [2023-04-03 01:26:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-04-03 01:26:03,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:03,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692999894] [2023-04-03 01:26:03,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692999894] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:03,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087099834] [2023-04-03 01:26:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:03,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:03,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:03,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:03,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-03 01:26:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:04,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-03 01:26:04,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-03 01:26:04,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:04,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087099834] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:04,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:04,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-03 01:26:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477740602] [2023-04-03 01:26:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:04,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:04,607 INFO L87 Difference]: Start difference. First operand 3849 states and 5535 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 3 states have call successors, (36) [2023-04-03 01:26:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:04,855 INFO L93 Difference]: Finished difference Result 5787 states and 8225 transitions. [2023-04-03 01:26:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:04,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 3 states have call successors, (36) Word has length 294 [2023-04-03 01:26:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:04,881 INFO L225 Difference]: With dead ends: 5787 [2023-04-03 01:26:04,882 INFO L226 Difference]: Without dead ends: 3859 [2023-04-03 01:26:04,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:04,895 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 195 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:04,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 506 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:04,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2023-04-03 01:26:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3848. [2023-04-03 01:26:05,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 2578 states have (on average 1.4359968968192398) internal successors, (3702), 2791 states have internal predecessors, (3702), 750 states have call successors, (750), 562 states have call predecessors, (750), 519 states have return successors, (868), 699 states have call predecessors, (868), 747 states have call successors, (868) [2023-04-03 01:26:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 5320 transitions. [2023-04-03 01:26:05,121 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 5320 transitions. Word has length 294 [2023-04-03 01:26:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:05,122 INFO L495 AbstractCegarLoop]: Abstraction has 3848 states and 5320 transitions. [2023-04-03 01:26:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (36), 2 states have call predecessors, (36), 3 states have call successors, (36) [2023-04-03 01:26:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 5320 transitions. [2023-04-03 01:26:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:05,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:05,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:05,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:05,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:05,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:05,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash -610408637, now seen corresponding path program 1 times [2023-04-03 01:26:05,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:05,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290761243] [2023-04-03 01:26:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-04-03 01:26:06,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290761243] [2023-04-03 01:26:06,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290761243] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925446062] [2023-04-03 01:26:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:06,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:06,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:06,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:06,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-03 01:26:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:06,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 01:26:06,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:26:06,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925446062] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:06,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:06,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-04-03 01:26:06,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904941618] [2023-04-03 01:26:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:06,675 INFO L87 Difference]: Start difference. First operand 3848 states and 5320 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:07,218 INFO L93 Difference]: Finished difference Result 11431 states and 16844 transitions. [2023-04-03 01:26:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:07,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294 [2023-04-03 01:26:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:07,265 INFO L225 Difference]: With dead ends: 11431 [2023-04-03 01:26:07,265 INFO L226 Difference]: Without dead ends: 7600 [2023-04-03 01:26:07,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:07,297 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 245 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:07,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 749 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2023-04-03 01:26:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 7557. [2023-04-03 01:26:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 5078 states have (on average 1.4269397400551398) internal successors, (7246), 5479 states have internal predecessors, (7246), 1467 states have call successors, (1467), 1110 states have call predecessors, (1467), 1011 states have return successors, (2132), 1353 states have call predecessors, (2132), 1464 states have call successors, (2132) [2023-04-03 01:26:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 10845 transitions. [2023-04-03 01:26:07,803 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 10845 transitions. Word has length 294 [2023-04-03 01:26:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:07,804 INFO L495 AbstractCegarLoop]: Abstraction has 7557 states and 10845 transitions. [2023-04-03 01:26:07,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 10845 transitions. [2023-04-03 01:26:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:07,839 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:07,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:07,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:08,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:08,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:08,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:08,050 INFO L85 PathProgramCache]: Analyzing trace with hash 966149122, now seen corresponding path program 1 times [2023-04-03 01:26:08,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:08,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699494571] [2023-04-03 01:26:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-04-03 01:26:08,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:08,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699494571] [2023-04-03 01:26:08,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699494571] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:08,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957608438] [2023-04-03 01:26:08,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:08,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:08,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:08,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:08,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-03 01:26:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:09,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-03 01:26:09,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 143 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:26:09,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:26:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-04-03 01:26:09,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957608438] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:09,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-03 01:26:09,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 13 [2023-04-03 01:26:09,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145283141] [2023-04-03 01:26:09,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:09,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 01:26:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 01:26:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:26:09,989 INFO L87 Difference]: Start difference. First operand 7557 states and 10845 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-03 01:26:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:11,126 INFO L93 Difference]: Finished difference Result 12987 states and 19249 transitions. [2023-04-03 01:26:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:26:11,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 294 [2023-04-03 01:26:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:11,187 INFO L225 Difference]: With dead ends: 12987 [2023-04-03 01:26:11,187 INFO L226 Difference]: Without dead ends: 9195 [2023-04-03 01:26:11,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 593 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:26:11,210 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 751 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:11,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 625 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:26:11,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9195 states. [2023-04-03 01:26:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9195 to 8804. [2023-04-03 01:26:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8804 states, 5910 states have (on average 1.4710659898477156) internal successors, (8694), 6695 states have internal predecessors, (8694), 1778 states have call successors, (1778), 1110 states have call predecessors, (1778), 1115 states have return successors, (2317), 1615 states have call predecessors, (2317), 1775 states have call successors, (2317) [2023-04-03 01:26:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 12789 transitions. [2023-04-03 01:26:11,877 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 12789 transitions. Word has length 294 [2023-04-03 01:26:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:11,877 INFO L495 AbstractCegarLoop]: Abstraction has 8804 states and 12789 transitions. [2023-04-03 01:26:11,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-03 01:26:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 12789 transitions. [2023-04-03 01:26:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:11,902 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:11,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:11,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-03 01:26:12,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:12,112 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:12,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:12,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1132363209, now seen corresponding path program 1 times [2023-04-03 01:26:12,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:12,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647887297] [2023-04-03 01:26:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:12,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-04-03 01:26:12,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:12,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647887297] [2023-04-03 01:26:12,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647887297] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:12,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755025167] [2023-04-03 01:26:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:12,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:12,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:12,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-03 01:26:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:13,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 01:26:13,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:26:13,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755025167] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:13,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:13,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-04-03 01:26:13,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773506301] [2023-04-03 01:26:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:13,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:13,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:13,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:13,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:13,384 INFO L87 Difference]: Start difference. First operand 8804 states and 12789 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:14,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:14,345 INFO L93 Difference]: Finished difference Result 26195 states and 40850 transitions. [2023-04-03 01:26:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:14,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294 [2023-04-03 01:26:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:14,439 INFO L225 Difference]: With dead ends: 26195 [2023-04-03 01:26:14,440 INFO L226 Difference]: Without dead ends: 17408 [2023-04-03 01:26:14,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:14,504 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 259 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:14,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 738 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17408 states. [2023-04-03 01:26:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17408 to 17317. [2023-04-03 01:26:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17317 states, 11662 states have (on average 1.46372834848225) internal successors, (17070), 13159 states have internal predecessors, (17070), 3483 states have call successors, (3483), 2198 states have call predecessors, (3483), 2171 states have return successors, (5643), 3113 states have call predecessors, (5643), 3480 states have call successors, (5643) [2023-04-03 01:26:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17317 states to 17317 states and 26196 transitions. [2023-04-03 01:26:15,884 INFO L78 Accepts]: Start accepts. Automaton has 17317 states and 26196 transitions. Word has length 294 [2023-04-03 01:26:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:15,885 INFO L495 AbstractCegarLoop]: Abstraction has 17317 states and 26196 transitions. [2023-04-03 01:26:15,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17317 states and 26196 transitions. [2023-04-03 01:26:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:15,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:15,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:15,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:16,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-04-03 01:26:16,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:16,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:16,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1694400758, now seen corresponding path program 1 times [2023-04-03 01:26:16,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118587909] [2023-04-03 01:26:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-04-03 01:26:17,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118587909] [2023-04-03 01:26:17,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118587909] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729205695] [2023-04-03 01:26:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:17,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:17,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:17,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:17,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-03 01:26:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:17,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-03 01:26:17,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 143 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:26:17,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:26:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-04-03 01:26:18,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729205695] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:18,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-03 01:26:18,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 13 [2023-04-03 01:26:18,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740110269] [2023-04-03 01:26:18,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:18,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 01:26:18,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:18,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 01:26:18,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:26:18,029 INFO L87 Difference]: Start difference. First operand 17317 states and 26196 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-03 01:26:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:19,724 INFO L93 Difference]: Finished difference Result 30455 states and 47760 transitions. [2023-04-03 01:26:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:26:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 294 [2023-04-03 01:26:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:19,847 INFO L225 Difference]: With dead ends: 30455 [2023-04-03 01:26:19,847 INFO L226 Difference]: Without dead ends: 21779 [2023-04-03 01:26:19,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 593 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:26:19,904 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 767 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:19,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 662 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:26:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21779 states. [2023-04-03 01:26:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21779 to 20708. [2023-04-03 01:26:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20708 states, 13998 states have (on average 1.521217316759537) internal successors, (21294), 16455 states have internal predecessors, (21294), 4386 states have call successors, (4386), 2198 states have call predecessors, (4386), 2323 states have return successors, (6127), 3855 states have call predecessors, (6127), 4383 states have call successors, (6127) [2023-04-03 01:26:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20708 states to 20708 states and 31807 transitions. [2023-04-03 01:26:21,398 INFO L78 Accepts]: Start accepts. Automaton has 20708 states and 31807 transitions. Word has length 294 [2023-04-03 01:26:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:21,399 INFO L495 AbstractCegarLoop]: Abstraction has 20708 states and 31807 transitions. [2023-04-03 01:26:21,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-03 01:26:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 20708 states and 31807 transitions. [2023-04-03 01:26:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:21,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:21,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:21,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-03 01:26:21,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-03 01:26:21,660 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:21,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1358278642, now seen corresponding path program 1 times [2023-04-03 01:26:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327883971] [2023-04-03 01:26:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-04-03 01:26:22,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327883971] [2023-04-03 01:26:22,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327883971] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407539681] [2023-04-03 01:26:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:22,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:22,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:22,496 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:22,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-03 01:26:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:22,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 01:26:22,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:26:22,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407539681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:22,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-04-03 01:26:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583181743] [2023-04-03 01:26:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:22,861 INFO L87 Difference]: Start difference. First operand 20708 states and 31807 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:24,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:24,955 INFO L93 Difference]: Finished difference Result 61699 states and 102358 transitions. [2023-04-03 01:26:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:24,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294 [2023-04-03 01:26:24,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:25,195 INFO L225 Difference]: With dead ends: 61699 [2023-04-03 01:26:25,196 INFO L226 Difference]: Without dead ends: 41008 [2023-04-03 01:26:25,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:25,340 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 266 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:25,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 738 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41008 states. [2023-04-03 01:26:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41008 to 40789. [2023-04-03 01:26:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40789 states, 27678 states have (on average 1.5156441939446492) internal successors, (41950), 32391 states have internal predecessors, (41950), 8587 states have call successors, (8587), 4358 states have call predecessors, (8587), 4523 states have return successors, (14865), 7385 states have call predecessors, (14865), 8584 states have call successors, (14865) [2023-04-03 01:26:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40789 states to 40789 states and 65402 transitions. [2023-04-03 01:26:28,361 INFO L78 Accepts]: Start accepts. Automaton has 40789 states and 65402 transitions. Word has length 294 [2023-04-03 01:26:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:28,362 INFO L495 AbstractCegarLoop]: Abstraction has 40789 states and 65402 transitions. [2023-04-03 01:26:28,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 40789 states and 65402 transitions. [2023-04-03 01:26:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:28,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:28,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:28,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:28,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-03 01:26:28,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:28,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1930049617, now seen corresponding path program 1 times [2023-04-03 01:26:28,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:28,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201955442] [2023-04-03 01:26:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:28,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-04-03 01:26:29,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201955442] [2023-04-03 01:26:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201955442] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239781140] [2023-04-03 01:26:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:29,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:29,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:29,264 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:29,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-03 01:26:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:29,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-03 01:26:29,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-04-03 01:26:29,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239781140] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:29,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-03 01:26:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355714420] [2023-04-03 01:26:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:29,734 INFO L87 Difference]: Start difference. First operand 40789 states and 65402 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2023-04-03 01:26:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:31,617 INFO L93 Difference]: Finished difference Result 61235 states and 97263 transitions. [2023-04-03 01:26:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) Word has length 294 [2023-04-03 01:26:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:31,883 INFO L225 Difference]: With dead ends: 61235 [2023-04-03 01:26:31,883 INFO L226 Difference]: Without dead ends: 40831 [2023-04-03 01:26:32,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:26:32,006 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 248 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:32,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 506 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40831 states. [2023-04-03 01:26:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40831 to 40788. [2023-04-03 01:26:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40788 states, 27678 states have (on average 1.5098634294385433) internal successors, (41790), 32391 states have internal predecessors, (41790), 8586 states have call successors, (8586), 4358 states have call predecessors, (8586), 4523 states have return successors, (12583), 7383 states have call predecessors, (12583), 8583 states have call successors, (12583) [2023-04-03 01:26:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40788 states to 40788 states and 62959 transitions. [2023-04-03 01:26:35,034 INFO L78 Accepts]: Start accepts. Automaton has 40788 states and 62959 transitions. Word has length 294 [2023-04-03 01:26:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:35,034 INFO L495 AbstractCegarLoop]: Abstraction has 40788 states and 62959 transitions. [2023-04-03 01:26:35,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2023-04-03 01:26:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 40788 states and 62959 transitions. [2023-04-03 01:26:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:35,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:35,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:35,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:35,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-03 01:26:35,317 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:35,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash 870725279, now seen corresponding path program 1 times [2023-04-03 01:26:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104214048] [2023-04-03 01:26:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-04-03 01:26:36,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:36,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104214048] [2023-04-03 01:26:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104214048] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:36,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439928789] [2023-04-03 01:26:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:36,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:36,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:36,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:36,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-03 01:26:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:36,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 01:26:36,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:26:36,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:26:36,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439928789] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:26:36,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:26:36,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-04-03 01:26:36,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468563448] [2023-04-03 01:26:36,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:36,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:26:36,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:36,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:26:36,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:36,413 INFO L87 Difference]: Start difference. First operand 40788 states and 62959 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:41,178 INFO L93 Difference]: Finished difference Result 121547 states and 204518 transitions. [2023-04-03 01:26:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:26:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294 [2023-04-03 01:26:41,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:41,651 INFO L225 Difference]: With dead ends: 121547 [2023-04-03 01:26:41,651 INFO L226 Difference]: Without dead ends: 80776 [2023-04-03 01:26:42,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:26:42,082 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 276 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:42,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 717 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:26:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80776 states. [2023-04-03 01:26:46,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80776 to 80341. [2023-04-03 01:26:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80341 states, 54726 states have (on average 1.5040382998940174) internal successors, (82310), 63751 states have internal predecessors, (82310), 16811 states have call successors, (16811), 8646 states have call predecessors, (16811), 8803 states have return successors, (30825), 14121 states have call predecessors, (30825), 16808 states have call successors, (30825) [2023-04-03 01:26:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80341 states to 80341 states and 129946 transitions. [2023-04-03 01:26:47,674 INFO L78 Accepts]: Start accepts. Automaton has 80341 states and 129946 transitions. Word has length 294 [2023-04-03 01:26:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:26:47,675 INFO L495 AbstractCegarLoop]: Abstraction has 80341 states and 129946 transitions. [2023-04-03 01:26:47,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:26:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 80341 states and 129946 transitions. [2023-04-03 01:26:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:26:47,829 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:26:47,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:26:47,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-03 01:26:48,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-03 01:26:48,037 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:26:48,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:26:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash 493082462, now seen corresponding path program 1 times [2023-04-03 01:26:48,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:26:48,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965993217] [2023-04-03 01:26:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:26:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-04-03 01:26:48,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:26:48,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965993217] [2023-04-03 01:26:48,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965993217] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:48,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503088055] [2023-04-03 01:26:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:26:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:26:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:26:48,751 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:26:48,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-03 01:26:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:26:49,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-03 01:26:49,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:26:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 143 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:26:49,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:26:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-04-03 01:26:49,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503088055] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-03 01:26:49,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-03 01:26:49,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 13 [2023-04-03 01:26:49,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859845185] [2023-04-03 01:26:49,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:26:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 01:26:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:26:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 01:26:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:26:49,610 INFO L87 Difference]: Start difference. First operand 80341 states and 129946 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-03 01:26:55,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:26:55,955 INFO L93 Difference]: Finished difference Result 146059 states and 243990 transitions. [2023-04-03 01:26:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:26:55,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 294 [2023-04-03 01:26:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:26:56,791 INFO L225 Difference]: With dead ends: 146059 [2023-04-03 01:26:56,791 INFO L226 Difference]: Without dead ends: 105863 [2023-04-03 01:26:57,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 593 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:26:57,042 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 544 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:26:57,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 716 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:26:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105863 states. [2023-04-03 01:27:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105863 to 99796. [2023-04-03 01:27:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99796 states, 68462 states have (on average 1.5707107592533085) internal successors, (107534), 82631 states have internal predecessors, (107534), 21898 states have call successors, (21898), 8646 states have call predecessors, (21898), 9435 states have return successors, (33611), 18007 states have call predecessors, (33611), 21895 states have call successors, (33611) [2023-04-03 01:27:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99796 states to 99796 states and 163043 transitions. [2023-04-03 01:27:03,992 INFO L78 Accepts]: Start accepts. Automaton has 99796 states and 163043 transitions. Word has length 294 [2023-04-03 01:27:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:27:03,993 INFO L495 AbstractCegarLoop]: Abstraction has 99796 states and 163043 transitions. [2023-04-03 01:27:03,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-03 01:27:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 99796 states and 163043 transitions. [2023-04-03 01:27:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:27:04,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:27:04,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:27:04,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-03 01:27:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-03 01:27:04,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:27:04,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:27:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1755304262, now seen corresponding path program 1 times [2023-04-03 01:27:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:27:04,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809392666] [2023-04-03 01:27:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:27:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:27:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:27:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-04-03 01:27:05,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:27:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809392666] [2023-04-03 01:27:05,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809392666] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:27:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337141167] [2023-04-03 01:27:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:27:05,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:27:05,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:27:05,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:27:05,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-03 01:27:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:27:05,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-03 01:27:05,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:27:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-03 01:27:05,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:27:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337141167] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:27:05,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:27:05,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-04-03 01:27:05,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713260852] [2023-04-03 01:27:05,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:27:05,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:27:05,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:27:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:27:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:27:05,497 INFO L87 Difference]: Start difference. First operand 99796 states and 163043 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:27:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:27:19,593 INFO L93 Difference]: Finished difference Result 297739 states and 533390 transitions. [2023-04-03 01:27:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:27:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294 [2023-04-03 01:27:19,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:27:21,102 INFO L225 Difference]: With dead ends: 297739 [2023-04-03 01:27:21,102 INFO L226 Difference]: Without dead ends: 197960 [2023-04-03 01:27:22,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:27:22,435 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 288 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:27:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 743 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:27:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197960 states. [2023-04-03 01:27:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197960 to 196821. [2023-04-03 01:27:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196821 states, 135654 states have (on average 1.5666180134754597) internal successors, (212518), 162887 states have internal predecessors, (212518), 42795 states have call successors, (42795), 17158 states have call predecessors, (42795), 18371 states have return successors, (82261), 34153 states have call predecessors, (82261), 42792 states have call successors, (82261) [2023-04-03 01:27:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196821 states to 196821 states and 337574 transitions. [2023-04-03 01:27:37,704 INFO L78 Accepts]: Start accepts. Automaton has 196821 states and 337574 transitions. Word has length 294 [2023-04-03 01:27:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:27:37,705 INFO L495 AbstractCegarLoop]: Abstraction has 196821 states and 337574 transitions. [2023-04-03 01:27:37,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-04-03 01:27:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 196821 states and 337574 transitions. [2023-04-03 01:27:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-03 01:27:38,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:27:38,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:27:38,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-03 01:27:38,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:27:38,219 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:27:38,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:27:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1653908263, now seen corresponding path program 1 times [2023-04-03 01:27:38,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:27:38,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665441514] [2023-04-03 01:27:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:27:38,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:27:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:27:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-04-03 01:27:38,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:27:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665441514] [2023-04-03 01:27:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665441514] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:27:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328142773] [2023-04-03 01:27:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:27:38,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:27:38,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:27:38,653 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:27:38,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-03 01:27:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:27:38,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-03 01:27:38,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:27:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-04-03 01:27:38,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:27:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328142773] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:27:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:27:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-03 01:27:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121653791] [2023-04-03 01:27:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:27:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:27:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:27:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:27:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:27:38,993 INFO L87 Difference]: Start difference. First operand 196821 states and 337574 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-03 01:27:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:27:53,161 INFO L93 Difference]: Finished difference Result 295275 states and 503607 transitions. [2023-04-03 01:27:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:27:53,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 294 [2023-04-03 01:27:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:27:54,566 INFO L225 Difference]: With dead ends: 295275 [2023-04-03 01:27:54,566 INFO L226 Difference]: Without dead ends: 196967 [2023-04-03 01:27:55,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:27:55,576 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 269 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:27:55,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 543 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:27:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196967 states.